Negative keywords are terms or phrases you specify for your PPC (Pay-Per-Click) campaign that you don’t want your ad to show for. For example, if you are selling shoes, you may want to add “free” as a negative keyword so that your ad doesn’t appear for someone searching for “free shoes.”
This is useful because it helps to focus your ad spend on people looking for the product or service you offer, increasing the chances that they will convert and reducing the risk of wasting money on irrelevant clicks. By using negative keywords, you can refine your target audience, improve the relevance of your ad, and ultimately increase the performance of your PPC campaigns.
Also, See: Exact Match Keywords