What Are Negative Keywords on Amazon (And How to Actually Use Them)

What a negative keyword actually does

A negative keyword tells Amazon's ad system: never show this ad for that search term. It's the opposite of a regular keyword. A regular keyword bids you into an auction; a negative keyword takes you out of one. There are only two negative match types on Amazon — negative exact and negative phrase. There's no negative broad.

Negative exact blocks the search term you type, and only that term, character for character. Negative phrase blocks any search that contains your term as a run of words, in order, no matter what else surrounds it. That difference matters more than most sellers realize — it's usually where things go wrong.

You can set a negative at two levels. Ad group level blocks the term only inside that one ad group. Campaign level blocks it across every ad group in the campaign. Auto campaigns and broad/phrase match campaigns are where negatives do the most work, because those match types deliberately cast wide and pick up terms you never chose.

A worked example: what a bad search term actually costs

Say you run an auto campaign for a cast iron skillet. The search term report shows "cheap cast iron skillet" got 40 clicks last month at an average cost-per-click of $0.90 — $36 spent — and zero orders. That's not catastrophic on its own. Left alone for six months at the same rate, it's $216 spent for nothing, and it's competing for budget against terms that do convert.

Adding a negative exact for that term doesn't refund the $36 you already spent — negative keywords are forward-looking, not retroactive. What it does is stop that specific drain going forward, so the next $216 goes toward terms that have already shown they convert. That's the entire value proposition: negatives don't make your good keywords perform better, they stop bad ones from eating the budget your good ones need.

How to add negative keywords in Amazon Ads

In Campaign Manager, open the campaign, go to the ad group (or the campaign-level negative keyword list), and choose Negative keywords. Pick negative exact or negative phrase, paste in the term, and save. It applies within minutes.

The faster path: from the Search Term report itself, most interfaces let you select a term and add it directly as a negative without retyping it — this avoids typos, which is a real source of negatives that don't actually block anything.

• Ad group level: use when the term is bad for this one ad group but might still be relevant elsewhere in the campaign.
• Campaign level: use when the term is irrelevant to everything in that campaign, not just one ad group.

How to find the negative keywords you actually need

Pull the Search Term report, sort by spend descending, and look at every term with meaningful clicks and zero orders. That's your starting list. Beyond that, watch for a few recurring patterns: price-signal terms like "cheap" or "free" that attract clicks but not buyers, wrong-attribute terms (wrong size, wrong color, wrong material), misspellings and pluralization that split traffic without adding relevance, and competitor brand or ASIN terms you're not deliberately targeting.

Set a threshold before you start — for example, don't act on a term until it has enough clicks to be a real signal rather than noise. Acting on a term with two clicks and no orders is just guessing.

How to remove a negative keyword you added by mistake

If a negative keyword is blocking a term that actually converts, pausing it isn't enough — you have to delete it from the negative keyword list in Campaign Manager. Pausing a negative still blocks nothing while leaving the entry there confuses anyone auditing the account later. Delete it, then confirm the term reappears in your eligible search terms within a few days.

Before you add a negative in the first place, it's worth knowing how you'd catch this. We hold every change we make to the same standard, whether it's a bid, a budget, or a negative keyword: every proposed change carries three things before it runs — the evidence behind it, a measurement plan, and a rollback trigger. For a negative keyword, the evidence is the search term data, the measurement plan is watching that ad group's orders and impressions for a set window afterward, and the rollback trigger is simple — if a converting term drops off because of the block, remove the negative.

The mistake almost everyone makes

Negative phrase blocks more than sellers expect. If you add "iron skillet" as a negative phrase because one bad search came through, you also just blocked "cast iron skillet stand," "12 inch iron skillet lid," and anything else containing that phrase — including terms that were converting. This is the single most common way sellers accidentally cut off working traffic. Default to negative exact unless you're certain an entire theme of searches is bad, not just one specific string.

The second common mistake, one we've made too: negating a low-conversion-rate term too early. A term can look bad in week one and be a legitimate part of the discovery funnel by week three, especially on a newer listing still building review volume and relevance. Give a term enough volume to be a real signal before you cut it.