Negative keywords

Negative keywords are terms you add to an advertising account to stop your adverts appearing for searches containing them. They are the counterpart to the keywords you bid on, and for most accounts they matter more, because the money lost to searches you never wanted is invisible until somebody goes looking for it.

In short

• They stop your adverts showing for searches you do not want.
• They exist because ordinary keywords match far more loosely than people expect.
• Unlike ordinary keywords, they do not expand to plurals and synonyms.
• Adding them is weekly maintenance, not a task you finish.

Why an account leaks without them

Keywords match loosely by design, and how loosely is set by the match type. You bid on a phrase and the platform shows your advert for things it considers related, which is generous in both senses.

A clinic bidding on dental implants meets people searching for what implants cost in another country, whether they hurt, how to become a dental assistant, and students writing essays. A repair business meets people looking for spare parts, manuals and jobs. None of those people are customers, all of those clicks are billed, and the account will not flag any of it.

That is the leak. It is not a fault in the platform, it is the platform doing what it was designed to do, and negatives are the only thing that closes it.

The report that shows you the problem

Everything useful starts in one place: the report of the searches that actually triggered your adverts.

It is distinct from your keyword list, and the difference is the point. Your keywords are what you asked for. The search terms report is what you got, minus the searches too rare to be shown, which Google withholds for privacy. That gap is real and it is small enough not to change the value of reading the rest. Reading down it for a week of a normal account will usually turn up a handful of patterns that were never going to buy anything, and adding those as negatives is the single highest-return half hour available in most accounts.

The habit matters more than the depth. A monthly hour will find less than ten minutes every Monday, because the wasteful patterns are new each week.

How negatives behave differently

Ordinary keywords expand, and this is where experience with them leads people straight into an expensive assumption. Add one and the platform matches plurals, close variants and related phrasings without being asked. Negative keywords do not expand in the same way. Casing and misspellings are handled for you, but plurals, singulars and synonyms are not.

So a negative added for one word will keep letting its plural through until somebody adds that too. People add “job”, see the spend continue, and conclude negatives do not work, when what happened is that “jobs” was never blocked.

Where they sit, and why it matters

Exclusions can be attached at several levels, and choosing wrongly produces problems that look like something else.

• Account level. Terms that are wrong for the entire business. Rare, and permanent.
• Campaign level. Where most belong. Free, jobs, salary, DIY, and the competitor names you do not want to pay for.
• Ad group level. For steering rather than blocking, such as keeping repair searches out of the group about installation.
• Shared lists. One set applied across several campaigns, so a new campaign starts with the obvious exclusions already in place.

The common accident is a broad negative added at campaign level that quietly blocks a term the account was converting well on. Nothing announces it. Traffic simply drops.

The list most businesses need on day one

A new account can start with the obvious exclusions rather than discovering them by paying for them.

Almost every business selling a service wants out of searches containing free, DIY, how to, yourself, jobs, salary, hiring, course and training. Leave the price words alone at this stage, for reasons the next section covers. Anybody not selling secondhand wants out of used and secondhand. Anybody serving one area wants the cities they do not cover. Add a competitor’s name only if you have decided not to bid on it, since some businesses deliberately do.

That takes ten minutes and prevents the first month of an account funding somebody’s homework. Everything after it comes from the search terms report.

Over-excluding is a real failure

The instinct after discovering waste is to exclude aggressively, and that has its own cost.

A negative is a decision that nobody searching with that word is worth reaching. Sometimes that is right. Often it is right for most of the traffic and wrong for a slice of it, and the slice is where the customers were. Somebody who searched “cheap” may have meant good value rather than free.

The safer approach is to exclude patterns rather than single words, check what a term would have blocked before adding it, and revisit the list once a year. Exclusion lists built during a panic tend to keep working long after the panic ended.

Words you will hear, and what they mean

• Search term. What a person actually typed. Not the same as your keyword, which is what you asked to appear for.
• Negative broad. Blocks any search containing all your words, in any order. The default and the one most used.
• Negative phrase. Blocks searches containing your words in that order.
• Negative exact. Blocks only the exact search, and nothing around it.
• Shared list. A saved set of exclusions applied to several campaigns at once.
• Conflict. A negative blocking one of your own active keywords. The account will usually flag it, and only if somebody looks.

The connection to what people meant

Underneath the mechanics, this is a judgement about intent.

Every negative you add is a statement that a particular kind of searcher is not your customer. That is the same distinction described under search intent: somebody learning is not somebody buying, and the words in the search are the evidence. Accounts that get this right are not the ones with the longest exclusion lists. They are the ones where somebody has thought about which searches belong to which stage, and priced their attention accordingly.

How the auction and the account are put together underneath all this is on the Google Ads entry.