When exact match stops meaning exact.

What the brackets used to mean

For most of Google Ads' history, an exact-match keyword — [emergency vet boise] — matched that search and nothing else. That was the point of it. You paid for the searches you chose, at the prices those searches commanded, and the search-terms report was a list of things you had already approved.

That definition has been loosening for years. Exact match now also matches "close variants": plurals, misspellings, reorderings, added or dropped function words, and — this is the one that matters — searches Google judges to have the same meaning. [emergency vet boise] can serve on "boise emergency animal hospital" or "vet emergency near boise tonight." Sometimes that is what you wanted. Sometimes it is a different intent with a different price, and you did not choose it.

Which keyword actually serves

Here is the part almost nobody running a practice's account has read, because it lives in a help-centre article about "keyword prioritization." When a search could match more than one of your keywords, Google decides which one serves. The rules, shortened:

• If you have an exact-match keyword that is identical to the search, it wins. Guaranteed.
• If the search is not identical to any exact keyword — if it is a plural, a reordering, a close variant — the guarantee is gone. Among the keywords that are eligible, the one with the highest Ad Rank serves.
• Ad Rank is bid times quality, plus other factors. A broad-match keyword with a higher bid or a stronger predicted click-through rate can therefore take the search from the exact-match keyword you meant to use for it.

Read that middle rule again, because it is the whole story. Your exact-match keyword only guarantees the exact search. For everything adjacent to it — which, in a real account, is most of the volume — the loose keyword and the tight keyword compete on Ad Rank, and the loose keyword was built to win that competition.

What that looks like in an account

The exact keywords stay enabled. Nobody pauses them. They just go quiet: impressions fall toward zero, the search-terms report stops attributing anything to them, and the broad-match keywords in the same ad group — often added by a recommendation card, sometimes by an agency following the platform's guidance — take the traffic. The budget is the same. The account is the same. The money has moved out of the lane you controlled and into the one you did not, and the report shows a healthy-looking campaign, because the broad keywords are getting clicks.

The clicks are on different searches. Broad match is designed to reach searches the advertiser did not think of, which is the generous description; the accurate one is that it reaches searches the advertiser did not choose. Those searches are, on average, less specific, so the ad is less relevant to them, so the landing page answers them less well, so the click converts less often and often costs more. The practice paid for a more expensive click that was less likely to become a patient, and the dashboard called it growth.

Why the platform prefers it this way

Not malice. Incentives. Broad match paired with automated bidding is Google's recommended configuration, and the recommendation is sincere: across all advertisers, in aggregate, it produces more conversions for Google to report and more spend for Google to collect. The system is optimising for a global average. A single-location veterinary practice with a $1,000 monthly budget and forty relevant searches a day is not the global average. It is a small, specific account for which every off-target click is a real fraction of the month's money, and the configuration that helps the average hurts the specific.

The same logic explains why the recommendation cards keep suggesting broad match, why the optimisation score penalises you for declining, and why a new campaign's defaults lean loose. Each of those is covered elsewhere on this site. This post is about what happens after: once broad is in the account, the prioritization rules route the money to it whether or not anyone intended that.

What to do about it

• Exact and phrase match, and nothing else, in a small account. You lose the searches you did not think of. You keep the ones you did, at the prices you can see.
• Read the "keyword" column in the search-terms report, not just the search-term column. It tells you which of your keywords actually served each search. If your exact keywords are not appearing in that column, they are not serving, and something looser is.
• A negative list that grows every week. Every search term that should not have matched becomes a negative. This is the single most valuable half-hour of maintenance an account gets, and it is the one most agencies skip.
• Match-type change alerts. If a keyword's match type changes and you did not change it, a recommendation was auto-applied. Turn auto-apply off, and check.
• Leave AI Max off, the campaign-level setting that expands matching further. It is off in every account I run, and the reason is everything above.

The honest version of "exact"

Exact match still means something. It means: on the search that is identical to this keyword, this keyword serves. That is a real guarantee and it is worth having. What it no longer means is "only this search," and the gap between those two definitions is where a small account's budget goes when nobody is reading the keyword column. Read the column.