A campaign can attract searches related to an industry while reaching people who want something the business does not offer. For companies investing in Google Ads, that gap between topic and intent deserves attention before increasing the budget.
Negative keywords help prevent ads from participating in certain searches. They require careful judgment: a poorly chosen exclusion can also affect people looking for a solution the business provides. This guide focuses on Search campaigns and offers a way to decide what to exclude, what to investigate, and how to monitor changes.
Start with what the business actually provides
Before reviewing search terms, document the boundaries of the offer: services provided, customer types served, geographic coverage, and needs that fall outside the scope. The business owner should validate this information with the team managing paid media.
Consider a company that maintains industrial equipment. Searches for maintenance services, technician jobs, and repair manuals may share words. They represent different needs, however. This is a hypothetical example, unrelated to results achieved by Leads clients.
The practical question is whether the business has a suitable offer and page for the person who made that search. When the answer is unclear, the team should investigate the context before blocking the term.
Distinguish keywords from search terms
A keyword is part of the advertiser's configuration. A search term is the query entered by the user. The Google Ads search terms report lets advertisers examine searches that triggered ads and their results. Some low-volume queries are hidden for privacy reasons, so the visible list does not represent all demand.
For the analysis, bring together the campaign, search term, cost, and conversions relevant to the objective. Also record the associated offer and landing page. This provides context for assessing relevance without treating each individual word as a conclusion.
Avoid calculating an assumed waste rate for the entire account using only visible search terms. You can estimate observed spending on a group classified as unsuitable, provided you state the period and the coverage of that analysis.
Classify searches before excluding them
A review can organize search terms into three decision groups. The following classification is a suggested working method, not a platform rule.
Outside the offer
These searches express needs the business does not serve. In the industrial example, a search for an internship may fall outside a campaign intended to generate maintenance inquiries. Document the reason for the exclusion and check whether it also applies to other campaigns.
Relevant, but without enough results
A search for the right service may not have generated inquiries yet. That alone does not establish a lack of relevance. Consider the volume of observations, the time between a visit and a conversion, and how well the page addresses the need.
Automatically excluding every search term without a conversion conflates different problems. An unclear page, a broken form, and an irrelevant search require different interventions. Our article on low CPC and campaign efficiency explores evaluation beyond cost per click.
Ambiguous
Some searches allow different interpretations. “Industrial maintenance course” tends to suggest training; “industrial maintenance consulting” may indicate a need the company serves, depending on its offer. The full context should guide the assessment.
Words such as “price,” “comparison,” or “how” do not need to go into an exclusion list automatically. A decision-maker may use these expressions while evaluating providers. The decision depends on intent, the offer, and the objective of that campaign.
Choose the breadth of the exclusion
According to the negative keyword documentation, for Search:
- Negative broad match: prevents ads from showing when the query contains all excluded terms, in any order.
- Negative phrase match: requires those terms in the same order, allowing additional words.
- Negative exact match: restricts the matching query without extra words.
An exact exclusion for a specific query can be an initial hypothesis when the problem concerns that wording. A broader exclusion calls for evidence that the affected group of searches is unsuitable. These matching rules should not be extrapolated to other campaign formats.
When adding negatives from the report, Google's stated default is negative exact match. Check the final setting instead of assuming that every similar search has been blocked.
Google also explains that negatives do not automatically cover every variant: singular forms, plurals, and synonyms require review. Misspellings and differences in capitalization are already accounted for. This calls for ongoing search monitoring rather than relying on a generic, ready-made list.
Decide where the rule should apply
An exclusion may suit one offer and harm another. If the same company also sells training, indiscriminately blocking course-related terms could restrict a valid campaign.
Negative keyword lists can be applied to relevant campaigns. Changes to a shared list affect the campaigns using it. Account-level negatives apply to eligible Search and Shopping inventory in the relevant campaign types.
Before adopting a broad rule, answer these questions:
- Is the need outside every offer, or only outside the campaign being reviewed?
- Could campaigns for recruiting, training, or other services be affected?
- Who will review the exclusion when the service portfolio changes?
Searches for the company's own brand also deserve a separate assessment. Our article on bidding on your own brand in Google Ads provides criteria for that decision.
Evaluate the effect without mistaking less traffic for improvement
Record the date, rationale, and scope of each change. Then monitor whether spending on unwanted intent declined and whether relevant demand continued to arrive. A drop in clicks alone does not demonstrate improvement.
Compare periods carefully. Simultaneous changes to budgets, ads, landing pages, or seasonality can affect the interpretation. In low-volume accounts, conclusions may remain uncertain for longer. Avoid setting a universal number of clicks or days after which a search should be excluded.
When reliable data on valid inquiries and fit with the offer is available, use it to evaluate acquisition and guide campaigns. This analysis belongs to marketing management; it does not require the agency to take over the client's sales operation.
If an excluded query still appears in the report, check whether it occurred before the change. Also verify that the list was applied to the correct campaign. These checks are recommended in Google's troubleshooting documentation.
What to ask for in paid media reporting
Useful reporting should explain decisions and the limits of the data. Ask for a summary of the main intent groups, observed spending on unsuitable groups, exclusions made, and questions still under investigation. Include relevant terms that may reveal opportunities to improve ads or landing pages.
The goal is to establish criteria that fit the business and revisit them when necessary. The number of negative keywords added is not a sufficient measure of management quality.
Leads to Growth's paid media management connects demand analysis, campaigns, and investment decisions. If your company attracts searches unrelated to its offer or lost volume after extensive exclusions, request an assessment to evaluate the structure and review priorities.
Documentation reviewed on November 2, 2026. Examples are hypothetical and do not constitute a performance guarantee.
