What are negative phrase keywords on Amazon?
Negative phrase keywords on Amazon PPC block your ad from showing for any search that contains your keyword as a consecutive sequence of words, regardless of what other words appear before or after it. This makes negative phrase a broader exclusion than negative exact. When you add a term as a negative phrase keyword, Amazon blocks your ad for any search that contains your keyword words in the same consecutive order, even if additional words surround them. If your negative phrase is 'for car', your ad will be blocked for 'best essential oil diffuser for car', 'essential oil diffuser for car usb', and any other search that contains that phrase as a sequence. Searches containing the same words in a different order, or searches that omit any of the words, are not affected. The words must appear together, consecutively, and in the same order. Negative exact blocks only searches that match your keyword precisely with no extra words. Negative phrase goes further: it blocks any search that contains your phrase anywhere within a longer query. This means negative phrase is more powerful but also more risky. If your negative phrase is 'diffuser for car' and a shopper searches 'best essential oil diffuser for car with USB', that search is blocked. But so is 'aromatherapy diffuser for car gift'. If some of those variations are actually relevant to what you sell, negative phrase will suppress them all. Negative phrase is most effective when an entire sub-topic is irrelevant to your product and you want to exclude all variations of it efficiently. If you sell premium plug-in essential oil diffusers for home use, any search containing 'for car' signals a product you do not stock, so adding 'for car' as a negative phrase blocks the whole category of car-use queries in one step. Similarly, if you keep appearing for searches containing 'diy' or 'how to make', adding these as negative phrases instantly removes DIY-intent traffic across all its variations, saving you from having to list dozens of negative exact terms. Automatic campaigns are the most common place to add negative phrase keywords. Because Amazon controls targeting in auto campaigns, the algorithm can send you into unexpected territory. Adding negative phrases for clearly off-target categories keeps the campaign focused without you needing to switch to manual targeting. Review your auto campaign search term report every one to two weeks. Any cluster of related irrelevant queries often points to a single negative phrase that will resolve the whole group at once.
Negative phrase keywords block your Amazon ad when your keyword appears as a consecutive phrase in a shopper's search, stopping irrelevant clicks at scale.