Updated September 2026: Negative keywords are still one of the most effective controls for stopping irrelevant Google Ads traffic, but they do not behave like positive keywords. Negative keywords do not automatically cover the same close variants, synonyms or related meanings that positive keywords can match to. That difference matters a lot when you build exclusion lists.
What Negative Keywords Do
A negative keyword tells Google not to show your ad when an eligible search contains the excluded term or phrase according to the negative match type you chose. I use negatives to remove traffic that cannot realistically become a customer—not simply traffic that looks unusual.
Where to Find Negative Keywords in 2026
For Search campaigns, go to Campaigns > Audiences, keywords and content > Search keywords > Negative search keywords. You can add negatives at ad-group or campaign level, or use shared negative keyword lists. Account-level negative keywords are available under Admin > Account settings > Negative keywords and can apply across relevant Search and Shopping inventory.
Negative Match Types
Negative Broad Match
Negative broad match blocks a search when all words in your negative keyword are present, even if the order differs. It does not work like positive broad match and does not expand to related meanings.
Example negative broad keyword: free trial. It can block searches containing both “free” and “trial,” but it will not automatically block every synonym or variant you may consider similar.
Negative Phrase Match
Negative phrase match blocks searches containing the phrase in the same order, even when other words appear before or after it.
Negative Exact Match
Negative exact match blocks the exact search phrase without extra words. For example, negative exact [running shoes] blocks “running shoes” but can still allow “blue running shoes.”
Important Difference: Negative Keywords Do Not Match Close Variants the Same Way
This is where many accounts waste money. Google states that negative keywords do not match all close variants. A negative keyword for “house” does not automatically exclude “houses.” If a variant matters commercially, add it explicitly.
Misspellings and casing are handled differently, but do not assume plurals, synonyms or reordered meanings are automatically covered.
Use the Search Terms Report, Not Guesswork
My main source of negative-keyword ideas is the Search Terms report. Review actual queries that generated impressions and clicks, then ask:
- Is this person looking for something I do not sell?
- Is the location outside the service area?
- Is the user looking for jobs, training, manuals, DIY or free information?
- Is the search intent research-only when the campaign goal is sales?
- Is the term relevant but better served by another ad group?
When you add a negative directly from the Search Terms report, Google currently defaults it to negative exact match, so review the match type before saving.
Account-Level Negative Keywords
Account-level negatives are useful for exclusions that should apply broadly across relevant Search and Shopping inventory, such as terms related to jobs, careers or products the business never offers. Google currently allows up to 1,000 account-level negative keywords.
Do not use account-level negatives for terms that are only irrelevant to one campaign. A global exclusion can accidentally block profitable traffic elsewhere.
Negative Keyword Lists
Shared lists are useful when multiple campaigns need the same exclusions. I commonly maintain lists for:
- employment intent: jobs, salary, vacancy, careers;
- education intent: course, tutorial, training, PDF;
- free/cheap intent where it conflicts with the offer;
- irrelevant locations;
- unsupported brands or product categories;
- adult or unsafe queries where relevant.
Performance Max and Negative Keywords
Performance Max has different controls from Search. Google supports account-level negative keywords for Performance Max, while campaign-level controls depend on the features available in the account. Do not assume every Search-level exclusion works identically in PMax.
Common Negative Keyword Mistakes
- Over-blocking: adding a broad negative like “free” can block legitimate searches such as “free consultation lawyer” even if that is a profitable lead.
- Using negatives to fix poor structure: if two campaigns constantly cannibalize each other, campaign structure may be the real issue.
- Assuming synonyms are excluded: negative keywords do not expand the way positive broad match can.
- Ignoring variants: add important plural/singular or alternative-word forms separately where needed.
- Never reviewing search terms: a static negative list becomes stale.
- Adding too many generic negatives: this can damage scale, especially with Smart Bidding.
How I Build Negative Keywords in a New Account
- Start with obvious business-model exclusions.
- Launch with conservative match types.
- Review Search Terms frequently during the learning period.
- Add negatives based on confirmed bad intent, not assumptions.
- Use shared lists for repeated exclusions.
- Keep account-level negatives only for truly global exclusions.
- Review exclusions before major campaign or website changes.
Negative Keywords and Broad Match / AI Max
As Google increases the use of broad matching, Smart Bidding and AI Max, exclusions become more important—but also more dangerous if applied too aggressively. The goal is not to force Google into an exact-match-only account. The goal is to remove clearly unprofitable intent while leaving enough query variety for Smart Bidding to learn.
Final Checklist
- Use the Search Terms report weekly on active Search campaigns.
- Know the difference between negative broad, phrase and exact.
- Do not expect close variants or synonyms to be excluded automatically.
- Use campaign, ad-group, shared-list and account-level negatives intentionally.
- Measure conversion quality before excluding a term that looks unusual.
For current Google guidance, see negative keyword troubleshooting and account-level negative keywords.
