Negative Keywords and Tuning

Negative keywords tell Google when NOT to show your ad. They block searches that contain terms you specify, stopping irrelevant clicks before you pay for them.

They are the single most effective tool for cutting wasted spend, especially when you use broad or phrase match.

The Search Terms report is where tuning starts. It shows the real queries that triggered your ads, with clicks, cost, and conversions for each.

Scan it regularly: add converting terms as keywords, and add wasteful or off-intent terms as negatives.

Negatives also have broad, phrase, and exact behavior, but they work more literally than positive keywords. Importantly, negatives do not match close variants.

Negative broad blocks any query with all the words; negative phrase blocks the words in order; negative exact blocks only that precise query.

Unlike positive keywords, negative keywords do not auto-block misspellings or plurals. If you block "free," the query "fre" or "freebie" can still slip through.

So add common misspellings and singular/plural forms explicitly when they matter.

Build reusable negative keyword lists for recurring junk like "free," "cheap," "jobs," "DIY," and competitor or adult terms. Apply one list across many campaigns at once.

This keeps protection consistent and saves you from re-adding the same negatives everywhere.

You can add negatives at the campaign or ad group level. Campaign negatives apply everywhere in that campaign; ad group negatives apply to just one group.

Use ad group negatives to steer traffic between groups, for example forcing brand queries into the brand ad group.

Negatives are powerful, so they are easy to overdo. Blocking "cheap" might kill profitable "cheap running shoes" buyers if budget value matters to your audience.

Before adding a negative, check its query had real cost and zero value. Do not block on a hunch.

A negative can accidentally block one of your own keywords. If you bid on "running shoes sale" but added "sale" as a negative, that keyword never serves.

Use the conflicting negatives report to find and remove negatives that cancel your active keywords.

Tuning is more than negatives. Shift budget toward campaigns hitting your Target CPA or ROAS, and pull it from underperformers.

With Smart Bidding, adjust the target rather than individual bids; a tighter Target CPA reduces volume, a looser one increases it.

Performance varies by time, device, and place. Review segments and apply adjustments: bid up where conversions are cheap, down where they are costly.

Even with Smart Bidding, these signals inform exclusions, such as turning off a location that never converts.

Optimization is a habit, not a one-time setup. A simple weekly routine keeps accounts healthy and spend efficient.

Mine search terms, add negatives and new keywords, refresh low RSA assets, rebalance budgets, and check for conflicts and disapprovals.

Apply your negative-keyword and tuning knowledge.

Negative keywords block irrelevant searches and are your top defense against wasted spend, especially with broad and phrase match. They are literal and ignore close variants, so add misspellings and plurals yourself.

Mine the Search Terms report, use shared negative lists, watch for conflicts, and pair negatives with bid, budget, and segment tuning in a steady weekly routine.