TL;DR
Negative keywords prevent your ads from showing for irrelevant searches. Without them, 20-40% of your budget goes to clicks that will never convert. In this guide: how match types work, where to add negatives, and how to build your own list from the Search Terms report.
3
organization levels
5
methods to find negatives
30%+
reduction in wasted spend
3
match types for negatives
Quick Answer
How do negative keywords work in Google Ads?
Negative keywords work by removing your ad from the auction for specific searches, using the same three match types as regular keywords — negative broad, negative phrase, and negative exact — each blocking a different range of search terms. You add them at three levels: a shared Negative Keyword List (account-wide), the campaign level, or the ad group level. Combined with a weekly Search Terms Report review, this is the mechanism that keeps budget from leaking into searches that were never going to convert.
Looking for the actual terms to paste in, not the theory? See the complete negative keywords list — 400+ terms across 15 copy-paste categories.
What Are Negative Keywords and Why They Matter
Negative keywords are words and phrases you DO NOT want your ads to show for. While regular keywords attract traffic, negatives filter it — protecting your budget from clicks that will never convert.
In practice, this is one of the most important optimization activities. On every account I audit, the Search Terms Report reveals at minimum 15-20% of budget spent on completely irrelevant searches.
From my experience: Proper negative keyword strategy is the fastest way to improve ROI — results are visible immediately, within the first week.
Regular keywords
Trigger your ad
Define which searches show your ad. Attract traffic to your site.
Negative keywords
Block your ad
Prevent showing for irrelevant searches. Protect budget from wasted spend.
Real-world case study
Client: Premium furniture eCommerce (UK)
Before negative keywords
- Budget: £2,000/month
- Conversions: 15
- CPA: £133
After adding negatives
- Budget: £2,000/month
- Conversions: 23
- CPA: £87 -35%
Blocked searches: "cheap chairs" (£180 spend, 0 conv), "used furniture" (£120, 0 conv), "DIY furniture" (£90, 0 conv), "IKEA furniture" (£150, 0 conv)
Match Types for Negative Keywords
Negative match types work differently from positive ones. Understanding the differences is critical to avoid blocking good searches by mistake.
| Match Type | Syntax | Blocks | Does NOT block |
|---|---|---|---|
| Negative Broad | free | Any search with that word, any order | Variations and synonyms ("trial", "gratis") |
| Negative Phrase | "free download" | Searches with exact phrase in that order | Different order ("download free") |
| Negative Exact | [free download] | Only that exact search | Anything additional ("free download CRM") |
Important: Negative Broad does NOT include synonyms
Unlike positive Broad match, negative Broad does NOT block synonyms and variations. If you block "free", the search "gratis CRM" still gets through. Add all common variations.
Match type recommendation
Use Negative Broad for most cases — covers widest range. Negative Phrase for specific phrases where order matters. Negative Exact rarely — only for very specific cases.
Where to Get the Actual List of Terms
Rather than duplicating hundreds of terms on this page, I keep the full list in one dedicated post: 400+ negative keywords across 15 copy-paste categories — 8 universal groups (free seekers, job seekers, DIY, informational searches, budget shoppers, used/refurbished, negative sentiment) plus 5 industry-specific lists (eCommerce, B2B/SaaS, local services, travel, real estate, fitness). Open the complete negative keywords list, pick the categories that match your business, and paste them straight into a Negative Keyword List.
How to Find Negative Keywords
The Search Terms Report is the same source you build the positive side of the campaign from. If you are still setting the campaign up, the order of steps is in the Google Search campaigns guide.
5 methods for finding negatives
Organizing Negative Keywords
Proper organization is as important as the keywords themselves. I recommend a three-tier system that maintains consistency across the entire account.
| Level | Where to add | When to use |
|---|---|---|
| Negative Keyword Lists | Account level (shared list) | For universal negatives that apply to all campaigns |
| Campaign Level | Specific campaign | For negatives specific to that campaign |
| Ad Group Level | Specific Ad Group | For keyword sculpting and granular control |
How to create Negative Keyword List
- Tools & Settings → Shared library → Negative keyword lists
- Click + for new list
- Name the list (e.g., "Universal Negatives")
- Add keywords
- Apply to all relevant campaigns
Naming convention for lists
Use format: [Type] - [Description]. Examples: "Universal - Free & Job Terms", "Industry - eCommerce Fashion", "Campaign - Brand Protection"
Negative Keywords — Audit Checklist
Weekly
Search Terms Review
- Top searches by cost
- New negative keywords added
- Check negatives do not block good searches
Monthly
Deep Dive
- Top 100 search terms by cost
- Universal list updated
- Industry list updated
Quarterly
Complete Review
- 90-day Search Terms analysis
- Cross-campaign negative analysis
- List reorganization
Most Common Negative Keyword Mistakes
Mistake #1
Never checking Search Terms
Solution: Set weekly reminder for Search Terms review. This is the most important optimization activity for negative keywords.
Mistake #2
Too aggressive blocking without analysis
Solution: Check volume and conversions before adding. Some keywords may look irrelevant but actually convert.
Mistake #3
Wrong match type for negatives
Solution: Use Negative Broad for general terms. Exact negative misses variations — "free" in Exact does not block "free CRM download".
Mistake #4
No shared lists — everything manual per campaign
Solution: Create Negative Keyword Lists and apply to all campaigns. Consistency and efficiency.
Mistake #5
Ignoring synonyms and variations
Solution: Add all common variations. Block "free" AND "gratis", "jobs" AND "careers". Negative Broad does not catch synonyms automatically.
Frequently Asked Questions About Negative Keywords
How many negative keywords is enough?▼
Do negative keywords affect Quality Score?▼
Can I accidentally block good searches?▼
How often should I review and update negative lists?▼
Are there mandatory negative keywords for every account?▼
Negative Broad vs Negative Phrase — when which?▼
Conclusion
Negative keywords are one of the most powerful optimization levers in Google Ads. Proper strategy can reduce wasted spend by 30%+ and improve ROAS by 20-50%. Start with universal list, add industry list, and review Search Terms weekly. Results are visible immediately.
Are you throwing money at irrelevant clicks?
Free Search Terms analysis with identification of wasted spend and negative keyword recommendations.
Schedule free consultationRelated Guides
Negative Keywords List — 400+ Terms
Copy-paste categories across 15 groups
Search Campaigns
Professional Search campaign management
Keywords — Complete Guide
From research to keyword optimization
Quality Score Guide
How to improve QS and reduce CPC
Google Ads Audit Checklist
80+ points for complete account review
Most Common Google Ads Mistakes
12 mistakes that destroy performance
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