What Match Types Work for Negative Keywords in Google Ads?

Google Ads Search campaigns support three negative keyword match types — broad, phrase, and exact — and negative broad match is the default when you add a negative keyword without specifying otherwise. Each type blocks searches differently, and none of them work exactly like their positive-keyword counterparts.

Negative Broad Match

Negative broad match is the default. Your ad won't show for a search if that search contains all the words in your negative keyword, in any order. Add "running shoes" as a negative broad match keyword and a search for "shoes for running" gets blocked too, since it contains both terms regardless of sequence.

Negative Phrase Match

Negative phrase match blocks searches that contain your exact keyword phrase, in that exact word order, even with other words added before or after it. "Running shoes" as a negative phrase keyword blocks "best running shoes" and "running shoes sale," but not "shoes for running."

Negative Exact Match

Negative exact match is the narrowest. It only blocks a search that matches your keyword terms exactly, in the exact order, with no additional words. You mark a negative exact match keyword with brackets, like [running shoes] — that blocks only the literal search "running shoes," not "running shoes sale" or "best running shoes."

Why Negative Match Types Don't Mirror Positive Ones

• Positive broad match can trigger on related searches, synonyms, and variations far beyond the literal terms
• Negative broad match only requires the same words to be present, in any order — it doesn't expand to synonyms or related concepts the way positive broad match does

This asymmetry is the single most common source of confusion: a negative broad match keyword blocks less than marketers expect, because it can't preemptively catch every phrasing of an unwanted search the way positive broad match can capture unexpected ones.

Bottom Line

Default to negative phrase match for excluding specific unwanted phrases without accidentally blocking valid searches that happen to share the same words in a different order, and reserve negative exact match for blocking one precise, known search term.

Source: Google Ads Help, "About negative keywords" (support.google.com/google-ads/answer/2453972).