Amazon Negative Keywords: The Complete Guide

Every Amazon PPC account leaks money to search terms that will never convert — a shopper looking for “waterproof phone case” clicking your regular phone case ad, or someone searching a competitor’s brand name landing on yours. Negative keywords are how you plug that leak. Most sellers know the feature exists and still never open the search term report. Here’s how to actually use it.

What a Negative Keyword Does

A negative keyword tells Amazon “never show my ad for this search term,” at the campaign or ad-group level. It doesn’t lower your bid or your budget — it removes the impression entirely for that specific search.

This matters most on broad and phrase match campaigns, and on auto campaigns, because both are designed to cast a wide net on purpose. That net catches irrelevant searches along with relevant ones, and negative keywords are the only way to narrow it after the fact.

Negative Exact vs Negative Phrase

This is the one distinction that trips people up, and getting it wrong either under-blocks or over-blocks your traffic.

• Negative exact blocks only that precise search term. Adding -cheap phone case as negative exact blocks “cheap phone case” but still lets through “cheap phone cases for iphone.”
• Negative phrase blocks the search term and anything containing it in that order. Adding -cheap phone case as negative phrase blocks “cheap phone case,” “cheap phone case for iphone,” and “buy cheap phone case online.”

Default to negative exact when you’re not sure. Negative phrase is a wider net and it’s easy to accidentally block a variation that would have converted. We only reach for negative phrase when a whole theme of searches — not one term — is clearly wrong for the listing.

Where to Find Negative Keyword Candidates

Pull the Search Term Report from Campaign Manager (or Search Query Performance for a broader view). Sort by spend, descending. You’re looking for terms with:

• Meaningful spend (enough clicks that it isn’t just noise) and zero orders in 30+ days — the clearest, safest negative
• Clicks but conversions far below your account average, on a term that’s semantically irrelevant to the listing
• Terms containing a competitor brand name you don’t want to pay to appear against, unless you’re deliberately running a conquesting campaign

Terms with spend but some conversions are a judgment call, not an automatic negative — check the ACoS on that specific term against your break-even before cutting it.

The Weekly Ritual

1. Pull the search term report for the past 30-60 days, filtered to the campaign you’re reviewing.
2. Sort by spend descending, and scan the top 20-30 rows first — that’s where most of the waste concentrates.
3. Flag zero-order terms with 3+ clicks as negative-exact candidates.
4. Flag irrelevant themes (wrong product type, wrong price tier, competitor names) as negative-phrase candidates if the whole theme is off.
5. Add negatives at the ad-group level if the term is wrong for one ad group but might be fine elsewhere in the campaign; add at the campaign level if it’s wrong everywhere.
6. Re-check the same report in a week. New irrelevant terms surface constantly, especially on auto and broad-match campaigns — this isn’t a one-time cleanup, it’s a standing habit.

This single ritual, done consistently, is usually the highest-ROI thing you can do in an Amazon PPC account. On accounts that have never run it, we typically see 10-20% of spend recovered in the first month with zero drop in sales — because none of that spend was buying sales to begin with.

Campaign-Level vs Ad-Group-Level Negatives

• Campaign-level negatives apply across every ad group inside that campaign. Use these for terms that are wrong everywhere — a completely unrelated product category, for instance.
• Ad-group-level negatives apply only within one ad group. Use these when a term is a poor match for one specific ad group’s products but might still be relevant to a different ad group in the same campaign — for example, “kids phone case” is a bad match in your adult-design ad group but a perfectly good keyword in a separate kids-design ad group in the same campaign.

Getting this wrong in the campaign-wide direction is the most common mistake — sellers negative a term at the campaign level that was actually converting fine in a different ad group, and quietly kill traffic they wanted.

Common Mistakes

• Negating too aggressively on gut feel instead of data. If a term has clicks but no orders yet with fewer than 3-5 clicks, that’s not enough data — wait before cutting it.
• Negative-phrasing when negative-exact would do. This is how sellers accidentally block a converting long-tail search because it happened to contain a “bad” word.
• Never reviewing auto campaigns. Auto campaigns generate the widest range of search terms and need the most frequent negative-keyword attention, but sellers often set them up once and never look again.
• Forgetting to harvest before you negate. A converting term buried in an auto or broad campaign should be promoted to an exact-match campaign before you tighten the broad one around it — don’t just cut waste, capture the winners too. More on that structure in our auto vs manual hybrid guide.

A Starting List Worth Adding Today

Even before your first search term report, these are worth pre-empting on most accounts:

• Your own brand name misspellings you don’t already own as keywords
• “Free,” “cheap,” “used,” “refurbished” — if you sell a premium or new-only product
• Direct competitor brand names, unless you’re intentionally running a conquesting play
• Wildly mismatched sizes, colours, or variants you don’t stock

The Payoff

Negative keywords don’t grow your sales — they redirect spend that was never going to become a sale toward the spend that will. Run the weekly ritual for a month and check your ROI calculator numbers before and after; the difference is usually visible within the first cycle.

Want your search term report reviewed for free? WhatsApp +91 92113 84333 with your seller account details and we’ll show you your top wasted-spend terms before you commit to anything. Our Amazon PPC management runs this ritual weekly on every client account.

Related: How to Lower Amazon ACoS Without Losing Sales Volume · Auto vs Manual Campaigns: The Hybrid Strategy