A negative keyword list is a list that blocks searches your ad should not appear for. It is the opposite of keyword selection: a keyword tells you which queries to target, while a negative keyword tells you which queries to never target. A campaign running without a list spends part of its budget on queries with no purchase intent, such as "free," "DIY," "job," and "course." The list is not created once and left alone — it grows every week based on the search terms report.
What a negative keyword actually blocks
In Google Ads, a keyword is not directly equal to a search query. You enter “website creation,” and the system shows your ad for hundreds of queries it considers close: “learn website creation,” “free website creation template,” and “website creation course.” All three are related to the topic, but none of them will buy the service.
A negative keyword cuts this gap. It means the ad does not enter the auction at all: the bid is not lowered, impressions are not reduced — there are no impressions at all.
Important point: negative keywords do not apply to close variants. When a regular keyword is written as “course,” Google also covers forms such as “courses” and “course-like.” There is no such expansion for a negative keyword — it blocks exactly what you enter. Plural forms, misspellings, and Latin/Cyrillic variants must be added separately. This rule is stated in Google’s official documentation on negative keywords.
Three Match Types and the Differences Between Them
A negative keyword also has a match type, but its logic differs from that of a regular keyword.
| Format | Type | What it blocks |
|---|---|---|
bepul |
Broad | Any query containing the word "free", regardless of word order |
"free template" |
Phrase | Queries containing that exact sequence |
[free template] |
Exact | Only the query "free template" itself |
A broad negative keyword works when all the words appear together. If you write arzon sayt, it blocks both "cheap site creation" and "site creation cheap", but it does not block queries containing only "cheap".
In practice, the rule is this: if a single word is not suitable for the entire campaign — use broad match (bepul). If a phrase is harmful only in a specific context — use phrase match ("sayt yaratish darsi"). If one specific query is coming in incorrectly, but nearby queries are useful — use exact match ([sayt yaratish narxi ozbekistonda]).
Where to Start Your Negative Keyword List
Even before launching a campaign, you should have at least one basic list. It usually consists of four groups:
- No-intent keywords — free, cheap, DIY, how to, lesson, textbook, course, learn, example, template, download.
- Job search — vacancy, job, job opening, salary, monthly salary, resume, internship.
- Competitor and brand names — if you don’t want to run ads for them.
- Similar topics but different services — for example, if you sell website creation: hosting, domain, logo, business card.
This list is built on assumptions and is therefore incomplete. Its purpose is to stop the most obvious waste in the first two weeks. The real list grows in the next stage from actual data.
Search terms report — the main source
In Google Ads, the Insights and reports → Search terms section shows what people actually type (not your keyword). The weekly routine is as follows:
- Select the last 7–14 days.
- Sort by cost in descending order.
- Work from top to bottom: for each query, answer the question, “Will this person buy my service?”
- If not — select the row, click “Add as negative keyword,” and choose the correct match type.
- If yes, and it is not among your keywords — add it as a separate keyword.
In the first weeks, this list will be long, then it will get shorter. For campaigns with few clicks, reviewing once a week is enough; for campaigns with many clicks, twice a week.
Note: not all queries appear in the search terms report — Google hides low-frequency queries below the privacy threshold. That is why broad negative keywords are valuable: they can also cover queries that are not visible.
Shared Negative Lists
Manually adding a single negative keyword to every campaign is a source of errors. A list is created in Tools → Shared library → Negative keyword lists and can be applied to multiple campaigns at once. You edit it in one place, and the change applies everywhere.
Practical structure:
- Global stop list — words that are not needed for any campaign, such as "free" and "vacancy". It is applied to all campaigns.
- Service-specific list — blocks overlap such as "contextual advertising" for an SEO campaign and "SEO audit" for an advertising campaign.
- Campaign-level negatives — belong only to that campaign and are not added to a shared list.
There are also account-level negative keywords (Settings → Account settings) — they apply to the entire account and should be used only for words that are absolutely unnecessary.
Most Common Mistakes
Over-blocking. A broad negative keyword blocks more than it is intended to. Adding narx as a negative keyword also excludes the highly valuable query "website development cost." Before adding any broad negative keyword, check: "Does this word appear in my valuable search queries?"
Conflict with the keyword. If you add a word from your keyword as a negative keyword, that keyword stops working entirely. Google’s interface displays such a conflict as a warning, but not always.
Confusion at the ad group level. A negative keyword added to one ad group does not affect another ad group. In a campaign with multiple ad groups, it is usually better to add negatives at the campaign level.
Assuming the same in Performance Max. In PMax campaigns, negative keyword controls are not as complete as in standard Search campaigns, and Google changes them from time to time — check the current documentation before using them.
Measurement: How to Know If the List Is Working
Compare three metrics month over month: the share of spend going to unwanted queries, overall CTR, and cost per conversion. If the list is growing correctly, CTR increases (because ads are shown to the right people), cost per conversion decreases, and impressions decrease — this is normal.
Comparing with organic queries is also useful: the query list in Search Console reports often shows at a glance both the keyword that should be added to ads and the topic that should be excluded.
Frequently Asked Questions
How long does it take to build a negative keyword list?
Building a base list takes 30–40 minutes. After that, reviewing the search terms report each week takes 10–15 minutes. After the first month, this task becomes significantly shorter, because the main sources of waste are already blocked.
How many negative keywords should there be?
There is no exact number. What matters is not the quantity, but the source: 50 keywords taken from a real search terms report are more useful than 500 written by guesswork. The list naturally grows as the campaign matures.
Can I do this myself?
Yes. Reading a search terms report and marking a query does not require technical knowledge — it is enough to understand your service. Just don’t confuse match types and add broad match negative keywords carefully. If the campaign is large or running across multiple services, it is worth setting this up systematically as part of a search advertising service.
When will results appear after adding a negative keyword?
The effect starts immediately — the added query stops triggering ads from that day. However, evaluating changes in metrics requires at least two weeks; otherwise, you may mistake daily fluctuations for improvement.
A negative keyword list is the cheapest optimization for a campaign: it requires no budget, takes 15 minutes per week, and directly reduces wasted spend. Together with budget settings, it brings the campaign into a controlled state.