Negative Keywords: A Small Business Guide to Google Ads

Negative keywords tell Google Ads which searches should not trigger your ads. For a small business, they help separate people looking for your offer from people seeking something else. Start with searches you can clearly identify as irrelevant, choose the right exclusion, and keep your website aligned with the visitors you want.

Find negative keywords in actual searches

Open the Search terms report for your Search campaign. Review what people searched, alongside clicks, cost, and conversions. Your chosen advertising keywords and customers’ actual searches can differ. Google also omits some low-volume queries for privacy, so this report is not a complete search history.

For each visible query, ask:

• Do we sell the product or service requested?
• Does the person want to buy, find employment, learn, or fix something themselves?
• Does our destination page answer that need?

Imagine a company advertising office cleaning. “Office cleaning jobs” suggests recruitment interest. “Office cleaning prices” could come from a buyer. Excluding both because neither produced an immediate inquiry would confuse different intentions.

Understand negative keyword match types

For Search campaigns, Google defines three negative match types:

• Broad: blocks searches containing all the excluded terms, in any order.
• Phrase: blocks searches containing those terms together in the specified order, including searches with additional words.
• Exact: blocks that search with the same terms in the same order and no additional words.

For example, the exact negative [office cleaning jobs] excludes that query, but not “office cleaning jobs nearby.” A phrase negative "cleaning jobs" can cover the longer query too.

Negative matching does not automatically include synonyms or singular and plural alternatives. Review those separately. Choose the narrowest exclusion that solves the mismatch, especially when a phrase could also describe something you sell.

Build a useful list and apply it carefully

Keep a simple record: excluded term, match type, reason, campaign, and date. Start with clear mismatches instead of importing a huge generic negative keyword list.

In the Search terms report, select the unwanted searches and choose “Add as negative keyword.” Then select the appropriate ad group or campaign and save. Google’s instructions explain that terms added this way default to negative exact match, so check the setting deliberately.

Use campaign exclusions for terms irrelevant across that campaign. Use an ad group exclusion when the mismatch is specific to that group. Review where a shared list applies before extending it.

Fix website gaps before excluding potential buyers

An unconverted search is not automatically irrelevant. Someone searching for office cleaning prices may leave because your website never explains scope, frequency, or how to request a quote.

Keep those questions visible on the destination page. Explain who the service suits, what it includes, where you work, and the next step. If pricing varies, describe the factors instead of promising a figure you cannot honor.

Review the inquiries that arrive, too. Nexlab Business includes contacts, labels, notes, and sales stages that can support this follow-up. Record whether each inquiry fits your offer and why.

During a weekly review, compare relevant inquiries and campaign costs. Check your change log if useful demand drops after an exclusion. Correcting a blocked buyer query and improving a confusing page are different actions.

Frequently asked questions

How do I find negative keywords before launching?

List offers you do not provide and clearly unrelated customer intentions. Treat these as candidates, check for conflicts with genuine buyers, and refine them using campaign data after launch.

Should I add “free” as a negative keyword?

Only when it consistently signals the wrong audience for your offer. A business providing free estimates could otherwise exclude relevant searches such as “office cleaning free quote.”

How many negative keywords do I need?

There is no useful universal target. Each exclusion should have a reason. A short, relevant list is easier to review than a large list copied without context.

How often should I review the list?

Start with a weekly review and adjust to campaign activity. Recheck exclusions whenever services, locations, or offers change.

Connect relevant searches with a clear next step

Use negative keywords to filter mismatched intent while preserving potential buyers. Then give those buyers a page that answers their questions. Explore Nexlab’s business website options to build a clearer destination for your campaigns.