Paid Search
Negative Keyword
A negative keyword is a term you exclude so your ads do not show for irrelevant searches, preventing wasted spend.
For example, a premium brand might add "free" and "cheap" as negatives to avoid bargain hunters. Building and maintaining a negative keyword list is one of the most effective ways to control costs in paid search. It sharpens targeting and improves overall relevance.
Negatives are the steering wheel of a search account, and they need scheduled attention because match types keep loosening: queries drift into your ads that were unimaginable when the campaign launched. The weekly search-terms review is the core ritual, but structure multiplies its value: shared negative lists apply cleanup account-wide, and cross-campaign negatives enforce routing, blocking brand terms from generic campaigns so each query lands where intended. The craft is precision: negate the modifier, not the topic, added carelessly at broad match, one word can silently block half a campaign's reach.
Example
A search-terms review of a corporate law firm's campaign finds spend on "free legal advice", "law internship" and "หนังทนายความ". Sixty negatives later, including "free", "salary" and "intern", 18% of daily budget stops leaking to searchers who could never become clients, and CTR rises because ads no longer show where they are the wrong answer.
Frequently asked questions
- How often should I add negative keywords?
- Weekly in active accounts: review the search terms report, negate irrelevant queries at the right level, and grow shared lists so cleanup compounds account-wide. New campaigns need daily checks their first week, when the query mix is still unknown.
- Can negative keywords hurt performance?
- Careless ones can: a broad-match negative on a common word silently blocks swathes of relevant traffic. Exclude the offending modifier without blocking the topic, prefer phrase and exact negatives, and audit the negative lists whenever reach drops without explanation.
Related terms
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