Definition
Negative keywords prevent your ads from showing for specific search terms, improving relevance and efficiency.
Example
If you sell enterprise software, add negatives like free, job, and template to block low-intent searches.
How to use it
- Build a shared negative list for irrelevant intents (jobs, free, definition).
- Use negatives to protect brand campaigns from low-intent queries when needed.
- Review negatives after major launches to avoid blocking new demand.
Common mistakes
- Over-blocking and reducing volume on profitable queries.
- Not reviewing search terms regularly (waste creeps in).
- Adding broad negatives that block valuable long-tail queries.
Why this matters
This term matters because it affects how you interpret performance and make budget decisions. If you use inconsistent definitions or windows, ROAS/CPA can look "better" while profit gets worse.
Practical checklist
- Write a 1-line definition for "Negative Keywords" that your team will use consistently.
- Keep the time window consistent (weekly/monthly/quarterly) when comparing trends.
- Segment results (channel/plan/cohort) before drawing big conclusions from blended averages.
- Sanity-check with a related calculator from the same category on MetricKit.
- Read the related guide (e.g., Paid ads bidding & budgeting hub: max CPC, target CPA, and break-even targets) for context and common pitfalls.
Where to use this on MetricKit
Calculators
- Target ROAS Calculator: Estimate a target ROAS to cover variable costs plus a desired margin buffer.
- Paid Ads Funnel Calculator: Model CPM -> CTR -> CVR to estimate CPC, CPA, ROAS, and profit per 1,000 impressions (with margin and variable costs).
- ROI Calculator: Calculate Return on Investment (ROI) for a campaign or project.
- Incrementality Lift Calculator: Estimate incremental conversions, incremental ROAS, and incremental profit from a holdout test.
- Marginal ROAS Calculator: Estimate diminishing returns and find the profit-maximizing ad spend from a simple response curve.
Guides
- Paid ads bidding & budgeting hub: max CPC, target CPA, and break-even targets: A practical hub for bidding and budgeting: compute max CPC from CVR and margin, set target CPA using LTV, and use break-even CTR/CVR/CPM targets to guide creative and landing optimizations.