Negative Keywords: How to Stop Paying for Irrelevant Searches

Every time someone clicks your ad, you pay a fee regardless of whether that person intends to buy. In a typical account, a significant portion of the budget can be lost to clicks that have zero chance of converting. For example, if you sell high-end luxury watches, someone searching for ‘cheap plastic watches’ is not your target audience.

Negative keywords help you maintain a high Quality Score by increasing your click-through rate (CTR). When your ads only show for highly relevant searches, users are more likely to click on them. Google rewards this relevance with lower costs per click and better ad positions. Alien Road recommends reviewing search terms regularly to find these budget-draining phrases.

Filtering out irrelevant traffic also improves the accuracy of your data. When your conversion rate is calculated based only on qualified traffic, you can make better decisions about bidding and scaling. You stop guessing which keywords work because the ‘noise’ from irrelevant searches is removed from your reports.

Understanding how match types function is the most critical part of this negative keywords guide. Unlike standard keywords, negative match types do not include close variants. If you exclude the singular version of a word, your ad might still show for the plural version. You must be specific about what you want to block.

• Negative Broad Match: Your ad will not show if the search contains all your negative keyword terms, even if the words are in a different order.
• Negative Phrase Match: Your ad will not show if the search contains the exact keyword phrase in the same order, even if there are other words before or after.
• Negative Exact Match: Your ad will not show only if the search query is the exact keyword phrase, with no extra words.

For negative broad match, if you use ‘running shoes’ as a negative, your ad will be blocked for ‘blue running shoes’ and ‘shoes running’. However, it will still show for ‘blue running’ or ‘shoes for walking’. This is the default setting in most platforms and is effective for blocking general themes.

Negative exact match is much more restrictive. If your negative keyword is [running shoes], your ad will still show for ‘red running shoes’. You should use exact match when you only want to block a very specific query while keeping similar long-tail searches active.

The Search Terms Report is your most valuable asset. This report shows the actual queries people typed before clicking your ads. You can find this in the Google Ads menu under ‘Keywords’ and then ‘Search terms’. Look for words that indicate a different intent than what you offer.

Common patterns often emerge in these reports. For a B2B software company, terms like ‘jobs’, ‘salary’, or ‘login’ often appear. These searchers are looking for employment or existing customer portals, not a new purchase. By excluding these, you save your budget for new prospects.

Google Keyword Planner is another useful tool during the initial setup of a campaign. When you search for your primary keywords, look at the results for terms that are related but not applicable. If you sell physical books, you might see many results for ‘audiobooks’ or ‘ebooks’ which you can proactively add as negatives.

Managing exclusions individually for every campaign is time-consuming and leads to errors. Using shared negative keyword lists allows you to apply a single list to multiple campaigns at once. You can find this option under ‘Tools and Settings’ in the ‘Shared Library’ section of your account.

• Standard Negatives: Create a list for general terms like ‘free’, ‘cheap’, ‘torrent’, ‘review’, and ‘youtube’.
• Competitor Negatives: If you do not want to bid on competitors, create a list of their brand names.
• Location Negatives: Exclude states, cities, or countries where you do not provide services.
• Career Negatives: Block terms like ‘hiring’, ‘internship’, ‘resume’, and ‘vacancy’.

Be careful not to over-block your traffic. If you sell ‘leather office chairs’ and you add ‘chairs’ as a negative broad match keyword, your ads will stop showing entirely. Always double-check your lists to ensure you are not accidentally negating your primary keywords. Additionally, review your ‘Conflict’ alerts in the Recommendations tab.

There are three levels where you can add negatives: account, campaign, and ad group. Account-level negatives are the most powerful because they apply to every search, display, and YouTube campaign you run. This is ideal for terms that will never be relevant to your business under any circumstances.

Campaign-level negatives are useful when you have different product categories. For example, if you have one campaign for ‘Men’s Shoes’ and another for ‘Women’s Shoes’, you should add ‘women’ as a negative in the men’s campaign. This prevents internal competition and ensures the user sees the most relevant ad.

Ad group-level negatives provide the most granular control. These are often used in ‘Alpha-Beta’ or ‘Single Keyword Ad Group’ structures to funnel traffic into specific groups. While this requires more maintenance, it allows for highly tailored ad copy that matches the user’s search intent perfectly.

Performance Max campaigns handle negatives differently than traditional search campaigns. Initially, you could not add negatives directly to these campaigns through the standard interface. You often had to request a Google representative to apply a negative keyword list to the campaign or use account-level settings.

Now, you can use account-level negative keywords to exclude specific brands or terms from your Performance Max traffic. This is vital for protecting brand integrity. If you do not want your ads appearing on search terms related to a recent PR crisis or a discontinued product, the account-level list is the most effective tool.

You should also leverage the ‘Brand Exclusions’ feature within the campaign settings. This allows you to select specific brands that you do not want your Performance Max campaign to target. It is a more user-friendly way to manage exclusions without needing to build complex keyword lists.