What Negative Keywords Do
Negative keywords prevent ads from serving for searches that contain or match unwanted terms according to the selected negative match type. They are a control mechanism, not a replacement for good campaign structure.
Find Them in Search Terms
The Search Terms report is one of the most useful sources for identifying irrelevant or low-value queries and discovering new keyword ideas.
Match Types Differ
Negative broad, phrase and exact match behave differently from their positive keyword counterparts. Negative keywords also do not expand through close variants in the same way positive targeting can.
Campaign vs Ad Group
Campaign-level negatives can exclude a theme across a campaign. Ad-group negatives can help separate closely related themes when appropriate. Shared negative lists can be useful when the same exclusions apply across multiple campaigns.
Avoid Over-Negating
A negative keyword can remove valuable demand if it is too broad. Always consider intent, the complete query and the actual business offer before excluding a term.
Lead Generation
For lead-gen accounts, irrelevant searches can include job seekers, students, free resources or unrelated services—but the correct exclusions depend on the actual business.
Ecommerce
Ecommerce accounts need special care because research queries can still contribute to purchase journeys. Exclude only when evidence shows the traffic is unhelpful.
Ongoing Review
Search-term optimization should be continuous but not compulsive. Review data on a sensible cadence and make changes based on patterns rather than one-off anomalies.
Frequently Asked Questions
Is there one best tactic for every business?
No. The right approach depends on the business model, customer journey, competition, economics and available data.
Can AI tools replace an SEO or advertising strategy?
AI can accelerate research and drafting, but human judgment is still needed for intent, evidence, prioritization, measurement and quality control.
How should I measure whether this is working?
Connect channel metrics to qualified leads, customers and revenue where reliable measurement is available.