Amazon Negative Keywords: A Practical Guide for Sellers

What Negative Keywords Are and Why They Matter on Amazon

Negative keywords are search terms you exclude from your Amazon Advertising campaigns. When a shopper types a term on your exclusion list, your ad will not appear. For sellers running Sponsored Products, Sponsored Brands, or Sponsored Display, negative keywords act as a filter that keeps spending focused on queries with purchase intent.

Without them, campaigns can burn budget on irrelevant clicks — broad matches for "free" or "DIY" terms, for example — that generate impressions but rarely convert. A deliberate negative keyword strategy lowers cost per click, improves Advertising Cost of Sales, and makes the data you read from campaign reports more trustworthy.

How Negative Keywords Work in Amazon Ads

Amazon lets you apply negative keywords at the campaign level or the ad group level. When you add a term as negative, Amazon will not trigger your ad on that exact match or close variants, depending on the match type you choose. The system uses the same broad, phrase, and exact match logic as targeting keywords, but in reverse.

Exclusions apply only within the scope where you set them. A negative keyword added at the campaign level stays within that campaign. If you want the same term excluded everywhere, you must add it to each campaign or use a shared negative keyword list, which Amazon supports across campaigns within an account.

Match Types for Negative Keywords

• Exact match — blocks the specific term and close variants.
• Phrase match — blocks searches that contain your term in that order, with other words before or after.
• Broad match — blocks searches that include any word in your phrase, in any order.

Where to Find Negative Keywords to Add

The most reliable source for negative keywords is your own search term report. Run the report, sort by clicks and spend, then look for terms that are irrelevant to your product, have no conversions, or match competitor brands you do not want to target. Other useful sources include Amazon's suggested search terms, competitor listing titles, and customer search behavior data in Business Reports.

Common categories sellers exclude include:

• Freebie and coupon terms
• Competitor brand names
• Unrelated product categories
• Informational queries with low purchase intent
• Terms that attract bargain hunters unlikely to buy your price point

Building a Negative Keyword List That Scales

A strong negative keyword list starts small and grows over time. Begin with obvious exclusions tied to your product category, then add terms weekly as you review search term data. Group negatives into lists by theme — such as brand exclusions, price-related terms, or irrelevant use cases — so you can reuse them across campaigns.

Use shared negative keyword lists for terms that should apply account-wide. For campaign-specific filtering, keep the list inside the campaign or ad group where the exclusion makes sense. This approach keeps control tight without duplicating effort.

Common Mistakes Sellers Make with Negative Keywords

Over-excluding is one of the most common mistakes. If you add too many negative terms, you can accidentally block high-intent queries that include a word you flagged as irrelevant. Another error is relying only on broad match negatives, which can suppress more traffic than intended. Some sellers also forget to review their lists regularly, letting outdated exclusions sit alongside new, relevant terms.

To avoid these problems, treat your negative keyword list as a living asset. Review it alongside your campaign performance data, test changes in small increments, and document why each term was added so you can revisit it later.

How Negative Keywords Improve Campaign Performance

When used consistently, negative keywords sharpen targeting, reduce wasted ad spend, and lift conversion rates. Because your budget is no longer diluted by irrelevant clicks, you can reallocate spend toward terms that drive orders. Over time, this creates a feedback loop: cleaner data leads to better decisions, which leads to stronger campaign results.

Negative keywords also protect brand spend. By blocking competitor terms and unrelated categories, you ensure your advertising dollars go only to shoppers whose intent aligns with your product. That alignment is what separates a campaign that merely runs from one that genuinely performs.