Negative keywords in Google Ads are terms you explicitly exclude from triggering your ads. When a search query matches a negative keyword you have set, your ad will not enter the auction for that query. To add negative keywords, go to your Google Ads account, navigate to the Keywords section, select the Negative Keywords tab, and add terms at the ad group, campaign, or shared list level.
This guide covers everything you need to know to use them properly: how match types work differently for negatives, where to apply them, how to build and manage lists, and the mistakes that quietly drain budget without anyone noticing.
Why Negative Keywords Matter More Than Most Advertisers Think
Google Ads match types have become increasingly broad over the years. Broad match and even phrase match can now trigger ads for queries that share intent signals but bear little resemblance to your actual keyword. That flexibility can expand reach, but it also means your budget can flow toward searches that have nothing to do with what you sell.
A plumber running ads on “drain cleaning” might show up for “how to clean a drain yourself” or “drain cleaning solution home depot.” Neither of those searchers is looking for a plumber. Without negative keywords blocking those queries, that plumber pays for clicks that will never convert.
Negative keywords are not just a hygiene task. They are a structural part of your campaign strategy that determines how precisely your budget reaches buyers.
The impact compounds over time. A campaign running for months without regular negative keyword reviews will accumulate wasted spend across dozens or hundreds of irrelevant queries, many of which drive a small but steady stream of costly, non-converting clicks.
How Negative Keyword Match Types Work
This is where most advertisers get confused. Negative keyword match types do not behave the same way as positive keyword match types. The rules are stricter and the logic is reversed.
Negative Broad Match
Despite the name, negative broad match is actually the most restrictive negative option. A negative broad match keyword will block your ad only when all the words in that keyword appear in the search query, in any order. It does not block synonyms or related terms the way positive broad match works.
If you add free trial as a negative broad match keyword, your ad will be blocked for “free software trial,” “trial free download,” and “get a free trial” because all the words appear. But it will not block “complimentary trial” or “no-cost demo” because those are different words.
Negative Phrase Match
Negative phrase match blocks your ad when the search query contains your negative keyword as an exact sequence of words, in that specific order. Additional words can appear before or after the phrase, but the phrase itself must appear intact.
If you add [free trial] as a negative phrase match, the query “sign up for a free trial” would be blocked. But “trial free download” would not be blocked because the words appear in a different order.
Negative Exact Match
Negative exact match is the most precise option. It blocks your ad only when the search query matches your negative keyword exactly, with no additional words before or after.
Adding [free trial] as a negative exact match will block the query “free trial” and only that query. “Get a free trial” or “free trial signup” would not be blocked.
Choosing the Right Match Type
The right choice depends on how broadly you want to exclude. Negative phrase match is the most commonly useful option because it blocks a meaningful range of queries while still being specific enough to avoid accidentally blocking relevant traffic. Negative exact match is useful when you want to exclude one particular search without risking over-exclusion. Negative broad match is often the least effective because it requires all words to be present and does not account for variations.
One practical approach: start with negative phrase match for known irrelevant terms, and use negative exact match for cases where you want to be surgical, such as blocking a competitor brand name that is very similar to your own product name.
Where to Apply Negative Keywords: Levels and Scope
Google Ads allows you to apply negative keywords at three distinct levels. Each level has a different scope, and understanding the difference is important for managing campaigns at scale.
Ad Group Level
Negative keywords added at the ad group level apply only to that specific ad group. This is useful when you have multiple ad groups within a campaign and want to prevent keyword overlap or funnel queries to the most relevant ad group.
For example, if you have one ad group for “running shoes” and another for “trail running shoes,” you might add “trail” as a negative in the first ad group so that trail-specific queries are directed to the more relevant ad group rather than the generic one.
Campaign Level
Negative keywords added at the campaign level apply to all ad groups within that campaign. This is the right level for exclusions that are relevant across the entire campaign, such as blocking “free,” “jobs,” or “how to” from a campaign focused on commercial buyers.
Campaign-level negatives are where most high-impact exclusions live. They prevent irrelevant queries from entering any ad group within the campaign without requiring you to repeat the same list in every ad group.
Account Level (Negative Keyword Lists)
Shared negative keyword lists sit at the account level. You create a list once and can apply it to multiple campaigns simultaneously. Any updates to the shared list automatically apply to all campaigns using it.
This is the most efficient way to manage exclusions that apply broadly across your account, such as competitor brand names you never want to appear for, generic non-commercial terms, or industry-specific irrelevant queries.
How to Add Negative Keywords in Google Ads
There are several ways to add negative keywords depending on where you want to apply them.
Adding Negatives at the Campaign or Ad Group Level
- Sign in to your Google Ads account.
- Select the campaign or ad group you want to work with.
- In the left navigation, click Keywords, then select the Negative keywords tab.
- Click the blue plus button to add new negative keywords.
- Choose whether to add them at the campaign or ad group level.
- Enter your keywords, one per line. Use brackets for exact match [keyword] and quotes for phrase match “keyword”. No symbols means broad match.
- Save your changes.
Creating and Using Shared Negative Keyword Lists
- In your Google Ads account, click the Tools and Settings icon (wrench icon).
- Under Shared Library, select Negative keyword lists.
- Click the plus button to create a new list.
- Name the list and enter your negative keywords.
- Save the list.
- To apply it to campaigns, go to Campaign negative keywords under the same Shared Library, click the campaign you want, and attach the list.
Shared lists are worth the initial setup time. A single list applied to ten campaigns is far easier to maintain than ten separate campaign-level lists that need to be updated individually.
Building a Negative Keyword List: What to Include
There is no universal negative keyword list that works for every account. The right exclusions depend on your product, audience, and the queries that are actually triggering your ads. That said, there are consistent categories of terms that commonly need to be excluded.
Non-Commercial Intent
Queries that indicate the searcher is not looking to buy. These include terms like “how to,” “what is,” “tutorial,” “guide,” “DIY,” and “free.” If your campaign is focused on driving purchases or leads, informational queries are likely to produce poor conversion rates even if they generate clicks.
The exception is if you are running content or awareness campaigns where educational queries are exactly what you want. In that case, these terms belong on your positive keyword list, not your negative list.
Job and Career Queries
If you are advertising a product or service, you almost certainly do not want to appear for searches like “[your industry] jobs,” “careers in [your field],” or “[product type] technician salary.” These are common sources of irrelevant traffic that can be easy to overlook.
Competitor and Irrelevant Brand Names
Depending on your strategy, you may want to exclude competitor brand names to avoid wasting budget on queries where someone has already chosen a competitor, or you may want to target them. If you are not running a deliberate competitor targeting campaign, it is usually better to exclude them.
Be careful here. If your product name is similar to a competitor’s, negative exact match is the safer choice to avoid accidentally blocking queries that include your own brand.
Geographic Irrelevancies
If your business serves a specific area, it can help to exclude location names that are outside your service area. This matters most for location-based businesses running broad match campaigns where city or region names might appear in queries.
Low-Quality Traffic Signals
Terms like “cheap,” “discount,” “free,” “cracked,” or “pirated” often signal price-sensitive or non-converting audiences. Whether to exclude these depends on your product positioning. A budget brand might welcome “cheap” queries; a premium service provider probably should not.
Mining Search Term Reports for Negative Keywords
The search term report is the primary source for identifying negative keywords you have not thought of yet. It shows the actual queries that triggered your ads and resulted in impressions or clicks.
To access it, go to Keywords in the left navigation and select Search terms. Review the report regularly, sorting by cost, clicks, or impressions to find high-volume irrelevant queries first.
Look for patterns rather than just individual terms. If you see fifteen variations of “free [your product type],” adding the word “free” as a negative phrase match will block the whole pattern rather than each term individually.
How often you review the search term report depends on your spend level. High-budget campaigns warrant weekly reviews. Lower-spend campaigns can be reviewed monthly. The goal is to catch wasted spend before it accumulates significantly.
Common Negative Keyword Mistakes
Negative keywords are straightforward in theory but easy to get wrong in practice. These are the mistakes that consistently cause problems.
Over-Exclusion
Adding too many negatives, or using the wrong match type, can block legitimate traffic. A common example is adding a broad negative that inadvertently blocks queries that would have converted. If you add “insurance” as a negative broad match and your campaign is for a financial services product, you might accidentally block “life insurance quote” even though that is a relevant query.
Always check your negatives against your actual positive keywords before applying them. Google Ads has a diagnostic tool that can help identify conflicts.
Ignoring Match Type Logic
Using negative broad match when you intended phrase match, or vice versa, produces different results than expected. Many advertisers add negatives without any match type symbol, defaulting to broad match, and then wonder why certain queries are still triggering their ads. Being deliberate about match type when adding negatives is not optional.
Setting Negatives and Forgetting Them
Your account changes over time. You add new campaigns, expand to new ad groups, shift to different match types. Negative keyword lists that made sense six months ago may be outdated or may no longer be applied to the right campaigns. Review your shared lists and campaign-level negatives periodically to make sure they still reflect your strategy.
Not Using Shared Lists
Managing campaign-level negatives separately across many campaigns creates maintenance overhead and inconsistency. If you are running more than two or three campaigns, shared negative keyword lists save time and reduce the risk of gaps where one campaign has an exclusion that another does not.
Conflicting Negatives and Positive Keywords
A negative keyword that conflicts with one of your positive keywords will prevent that keyword from matching, even if the positive keyword is otherwise eligible. Google Ads will not warn you about this in real time. Use the keyword diagnosis tool to catch these conflicts, particularly after adding a new batch of negatives.
Structuring Negative Keyword Lists for Scale
For accounts with many campaigns, a tiered approach to shared lists works well. Rather than one giant list applied to everything, consider creating lists by category.
- Brand exclusions list: Competitor and irrelevant brand names you never want to appear for across the account.
- Non-commercial intent list: Informational and research queries to exclude from conversion-focused campaigns.
- Audience quality list: Terms that signal the wrong type of buyer, such as “student,” “internship,” or “sample” depending on your product.
- Geographic exclusions list: Location names outside your service area for location-specific businesses.
Each list is applied only to the campaigns where it is relevant. A brand campaign, for example, might not need the non-commercial intent list because branded queries are already specific enough. A broad match campaign targeting top-of-funnel traffic might need all four lists applied simultaneously.
How Automation Can Support Negative Keyword Management
Reviewing search term reports manually is effective but time-intensive, especially in accounts generating thousands of queries per week. Automation tools can help identify wasteful search terms faster and reduce the lag between a query first appearing and a negative being added.
Adsroid Copilot includes the ability to detect wasted search terms in Google Ads and propose them as negative keywords for review. Rather than replacing the manual review process, it shortens the cycle by flagging terms that match patterns associated with non-converting traffic based on account performance data.
The workflow follows a Detect, Propose, Approve, Execute sequence. When Copilot identifies a search term that appears to be draining budget without contributing to conversions, it surfaces a proposal. You review it and either approve or dismiss the exclusion. Once approved, the negative is added directly to the account. No manual entry required.
This is particularly useful for high-traffic accounts where the volume of search terms makes weekly manual reviews difficult to complete thoroughly. It does not replace human judgment on which terms to exclude, but it removes the bottleneck of identifying them in the first place.
Copilot also supports an Autopilot mode for accounts where the patterns are well understood and the risk of over-exclusion is low. In that mode, supported negative keyword actions can execute automatically within configured thresholds without requiring approval for each individual proposal.
Negative Keywords and Campaign Structure
Negative keywords also play a structural role in how campaigns segment traffic. When you have multiple campaigns or ad groups targeting overlapping themes, negatives are what prevent the wrong campaign from winning the auction for a given query.
A classic example is a branded versus non-branded campaign structure. You run one campaign targeting your own brand name and another targeting generic category terms. Without adding your brand as a negative keyword in the generic campaign, both campaigns compete for branded queries. The branded campaign usually wins, but you are still paying for unnecessary auction competition within your own account.
Similarly, if you run separate campaigns by product line, funnel stage, or geography, negative keywords are the mechanism that keeps traffic in the right lane. This is especially important in accounts using broad match, where a single keyword in one campaign can theoretically match queries that belong in a different campaign with different bids and messaging.
Frequently Asked Questions
What is the difference between negative keywords and positive keywords in Google Ads?
Positive keywords tell Google which queries you want your ads to be eligible for. Negative keywords tell Google which queries you want to be explicitly excluded from. Both are necessary to control where your ads appear and where your budget is spent.
How many negative keywords can I add in Google Ads?
Google Ads allows up to 5,000 negative keywords per campaign and up to 5,000 keywords per shared negative keyword list. A single account can have multiple shared lists. For most advertisers, these limits are more than sufficient.
Do negative keywords affect Quality Score?
Not directly. Quality Score is calculated based on expected click-through rate, ad relevance, and landing page experience for a specific keyword. However, by filtering out irrelevant traffic, negative keywords can improve the overall relevance signals Google sees for your campaigns over time, which may indirectly support performance.
Can I use negative keywords with Performance Max campaigns?
Yes, but the options are more limited than with standard Search campaigns. For Performance Max, you can request account-level negative keywords through Google support, or apply shared negative keyword lists. Google has also added some campaign-level negative keyword controls for Performance Max, though the interface continues to evolve.
How often should I review my negative keyword lists?
For actively spending campaigns, reviewing the search term report weekly is a reasonable cadence for the first few months. Once the account is more established and the major irrelevant patterns have been excluded, monthly reviews are often sufficient. High-volume accounts may benefit from more frequent reviews or automated detection tools.
What happens if a negative keyword conflicts with a positive keyword?
The negative keyword takes priority. If there is a conflict, your positive keyword will be prevented from matching the affected queries. Google Ads includes a keyword diagnosis tool you can use to detect these conflicts. Resolving them usually means adjusting the match type of the negative keyword or removing the conflict altogether.
