Negative keyword match types determine how much traffic an exclusion can remove. The safest choice is usually the smallest match that blocks the unwanted intent—not the broadest option available.
Google Ads uses the names broad, phrase, and exact for negative keywords, but they do not behave like the positive match types with the same names. Negative keywords are comparatively literal and do not expand to close variants, synonyms, or related meanings.
The short answer
Use this negative keyword as the example: training course.
| Negative match type | Enter it as | Blocks | Does not block |
|---|---|---|---|
| Broad | training course | online training course and course for training | training courses or plumbing classes |
| Phrase | "training course" | free training course online | course for training or training courses |
| Exact | [training course] | training course | free training course or training course online |
The distinction is about the words in the negative and their order:
- Negative broad requires every word in the negative phrase to appear in the search, in any order.
- Negative phrase requires the words to appear in the same order. Extra words may appear before or after the phrase.
- Negative exact blocks the exact phrase without extra words.
These rules come from Google’s definitions of negative broad match, negative phrase match, and negative exact match.
Negative broad match: all words, any order
Negative broad match is useful when the combination of words is always irrelevant to a particular campaign.
For example, a plumbing company that does not provide training could use plumber training. This can block searches such as:
plumber training onlinetraining for plumberonline plumber training
It will not automatically block training for plumbers, plumber courses, plumbing certification, or how to become a plumber. The plural plumbers needs separate coverage; synonyms and related meanings are not automatically excluded either. Add additional exclusions only when the business has decided that those patterns should also be blocked.
Be especially careful with a one-word broad negative. The negative jobs can block any eligible search containing the word jobs, but it will not necessarily cover job or careers. A word that looks obviously unwanted in one account can be valuable in another.
Choose broad match when:
- every word in the phrase is needed to describe the unwanted pattern;
- word order does not change the meaning; and
- the phrase is not likely to appear in a valuable search.
Negative phrase match: the words stay in order
Negative phrase match is a good middle ground when the exact wording is a reliable signal, but people may add modifiers around it.
For example, "plumber training" can block online plumber training and plumber training near me while leaving training for plumber available for review. It is narrower than broad match because the words must remain in the same order.
Phrase match is often a sensible starting point for a multi-word exclusion discovered in the Search terms report. It still has a meaningful blast radius, so read a few nearby queries before applying it. If the phrase can occur in both useful and irrelevant searches, use exact match for the observed query or narrow the phrase.
Negative exact match: one known query
Negative exact match is the narrowest option. [plumber training online] blocks that exact search, but an added modifier such as free plumber training online can remain eligible.
Use exact match when:
- one observed query is clearly irrelevant;
- similar searches may still be valuable; or
- you need to test an exclusion before widening it.
Exact match is not a complete solution for a recurring pattern. If ten different queries all show employment intent, adding ten exact negatives may be harder to maintain than a carefully reviewed phrase or broad negative.
Negative match types are not positive match types
Positive keywords can match close variants and, depending on the match type, searches with related meaning. Negative keywords do not work that way. Google says negatives account for casing and misspellings, but do not match other variants automatically. Singular and plural forms, synonyms, and related concepts may need separate review.
That is why a negative keyword can appear to be “not working.” A positive keyword may have matched a close variant, while the negative was checked literally. The Match type shown in the Search terms report describes how the search related to the positive keyword that triggered the ad; it does not guarantee that a negative with the same words would block it.
For a deeper explanation, see why Google Ads close variants can still miss negative keywords.
A practical way to choose the type
Before adding a negative, write down the reason in one sentence: “This search should not enter this campaign because…” Then choose the smallest pattern that makes the sentence true.
| Situation | Starting point | Why |
|---|---|---|
| One clearly irrelevant query | Exact | Removes the observed query with the least spillover |
| A phrase that stays meaningful with added modifiers | Phrase | Blocks the phrase while allowing different word order |
| A combination whose words are always unwanted together | Broad | Covers the words in either order |
An ambiguous single word such as free, cheap, or jobs | Exact or a tightly scoped phrase | Avoids blocking valuable searches that share the word |
Match type is only one decision. You also need to choose the destination:
- Ad group when the exclusion only conflicts with one tightly defined theme.
- Campaign when the intent is irrelevant to that campaign but useful elsewhere.
- Negative keyword list when the same policy is approved for several campaigns.
- Account level only when the term is genuinely unsuitable across the account’s relevant search and shopping inventory.
Do not use an account-wide list to solve a campaign-specific mismatch.
Review variations after the change
Negative keywords should be built from evidence, not from a guessed synonym dictionary. After applying an exclusion, review new search terms and look for:
- singular and plural versions;
- alternate wording or synonyms;
- reversed wording that phrase match would not cover;
- a different intent that should remain eligible; and
- a useful query that was blocked by an overly broad term.
Google’s Search terms report guidance notes that adding a negative from the report to a Search campaign uses negative exact match by default. You can change the match type with the appropriate notation before saving.
Bottom line
Use exact match for one proven-bad query, phrase match for a stable ordered phrase, and broad match only when all words together are an unambiguous exclusion. Start narrow when the evidence is mixed, then widen the control only after repeated search-term reviews show that the broader pattern is truly unwanted.
If you want help turning actual search terms into reviewable recommendations, try LeadUp’s Google Ads negative keyword tool. It analyzes queries with campaign context and lets you edit the proposed text, match type, and destination before anything is pushed.