Google Ads Negative Keywords Strategy for Shopify Stores

Why Negative Keywords Are Your Most Underused ROAS Tool

If you asked most Shopify store owners to name their top Google Ads optimisation priority, they would say bidding strategy, audience targeting, or ad copy. Rarely would they say negative keywords. Yet in audit after audit of Shopify Google Ads accounts, wasted spend on irrelevant search queries is consistently the single largest source of budget inefficiency — often accounting for 20–40% of total spend with zero conversion potential.

Negative keywords tell Google which search queries should not trigger your ads. They are the guardrails that keep your budget focused on buyers rather than researchers, bargain hunters, job seekers, students, and DIY enthusiasts who share search terms with your actual customers but have zero purchase intent for your products.

This guide builds a comprehensive negative keyword strategy for Shopify stores — from the universal seed list every store should start with, to advanced category-specific negatives, to systematic search term mining for ongoing optimisation.

Understanding Negative Keyword Match Types

Negative keywords work differently from regular keywords — the match type logic is inverted and more conservative. Get this wrong and you will either block too much or too little traffic.

• Broad Match Negative: Blocks any query containing all the words in your negative keyword, in any order. Example: negative broad match “free shipping” blocks “free UK shipping running shoes” and “shoes with free shipping” but NOT “free shoes” (only one word matches).
• Phrase Match Negative: Blocks queries that contain your negative keyword phrase in that exact order, with words potentially before or after. Example: negative phrase match “how to” blocks “how to clean leather shoes” but NOT “tutorial how to care for shoes” (order matters).
• Exact Match Negative: Only blocks the exact query, nothing else. Most precise but requires more keywords to achieve full coverage. Example: [free shoes] only blocks exactly “free shoes”.

For broad blocking of clearly irrelevant categories (like “jobs”, “wholesale”, “DIY”), use phrase match negatives. For nuanced cases where you want to block one specific query but not related terms, use exact match. Avoid broad match negatives for most cases — they can accidentally block relevant traffic.

The Universal Shopify Negative Keyword Seed List

Every Shopify store should add these negative keywords as phrase match from day one of their campaigns. These terms indicate non-purchase intent that is universal across e-commerce:

Research and Informational Intent

• “how to make” / “how to make your own” / “how to diy” / “diy” / “homemade” / “make yourself”
• “what is” / “meaning of” / “definition” / “history of” / “origin of”
• “free tutorial” / “free pattern” / “free template” / “free guide” / “free course”
• “review of” / “is it worth it” / “pros and cons” (informational searches, not transactional)

Job and Career Intent

• “jobs” / “job vacancy” / “careers” / “hiring” / “job opening” / “apply for” / “employment”
• “salary” / “wages” / “hourly rate” / “pay scale” (if selling products, not services)

Wholesale and Trade Intent

• “wholesale” / “bulk order” / “trade price” / “bulk buy” / “minimum order” / “pallets” (unless you sell wholesale)
• “dropship” / “dropshipping” / “supplier” / “manufacturer”

Free/No-Cost Intent

• “free” (careful — use as phrase match only for combinations like “free download”, “free sample” rather than standalone to avoid blocking “free delivery” searches)
• “giveaway” / “win a” / “sweepstakes” / “competition prize”

Student and Academic Intent

• “essay” / “assignment” / “project” / “school” / “university” / “student discount” (unless you offer student discounts as a feature)
• “research” / “case study” / “academic”

Category-Specific Negative Keywords by Product Type

Fashion and Apparel Stores

• “sewing pattern” / “knitting pattern” / “crochet pattern” / “how to sew” / “fabric” (if not selling fabric)
• “costume” (if not selling costumes — avoids Halloween/cosplay traffic)
• “second hand” / “thrift” / “charity shop” / “preloved” (unless reselling)

Health and Beauty Stores

• “prescription” / “NHS” / “doctor” / “clinic” / “medical” (for non-medical products)
• “side effects” / “warning” / “recall” (research intent, not purchase intent)
• “recipe” (for food-adjacent health products where recipe searches may trigger ads)

Home and Garden Stores

• “rent” / “rental” / “hire” (if you sell rather than hire products)
• “repair” / “fix” / “restore” (unless you sell repair kits or tools)
• “plans” / “plans for” / “how to build” (DIY intent)

Electronics and Tech Stores

• “repair” / “fix” / “replace screen” (unless you sell repair services)
• “jailbreak” / “unlock” / “hack” / “cracked” (piracy/circumvention intent)
• “driver download” / “software update” / “firmware” (technical support intent, not product purchase)

Mining Search Term Reports for New Negatives

Your negative keyword list should be a living document that grows with your account data. The primary source of new negatives is your Search Terms report. Access it in Google Ads under Campaigns → Search terms (for Search campaigns) or through the Insights tab for Shopping/PMax.

Weekly search term review process: Filter your search terms to show queries with 5+ clicks and zero conversions over the past 30 days. Review each query and ask: “Would someone searching this phrase genuinely want to buy my product right now?” If no, add as a phrase match negative. Group similar terms into themes — for example, all queries containing “wholesale” go into a “wholesale” negative keyword list that you apply at account level.

Also look at queries with high impressions and very low CTR (under 0.1%). These are often borderline queries where your product is technically eligible but clearly not what the searcher wanted. Adding these as negatives cleans up your impression quality metrics and can improve your overall campaign quality scores over time.

Organising Negatives with Negative Keyword Lists

Do not add negatives individually to each campaign — this is maintenance-heavy and leads to inconsistent coverage. Instead, create shared negative keyword lists (Tools → Negative keyword lists in Google Ads) and apply them at campaign level:

• Universal List: Applied to all campaigns. Contains the universal seed list from this article.
• Category Lists: Applied to relevant campaigns. For example, a “Fashion Negatives” list applied only to apparel campaigns.
• Brand Exclusion List: Competitor brand names you do not want your non-branded campaigns to trigger on. Apply to all non-branded campaigns.
• Mined Negatives List: Growing list of terms discovered through weekly search term audits. Applied account-wide.

Negative Keyword Mistakes to Avoid

• Over-blocking with broad match negatives: Adding standalone words like “free” or “cheap” as broad match can inadvertently block “cheap running shoes” or “free delivery trainers” — valid commercial searches.
• Adding negatives without checking: Before adding any negative keyword, verify using Keyword Planner that it does not overlap with your positive keywords in a way that could conflict.
• Never reviewing your negative list: Business contexts change. A term you added as a negative 18 months ago may now be relevant if you have expanded your product range.
• Blocking competitor brand names in branded campaigns: Your branded campaign should capture searches for your brand name — do not add your own brand terms as negatives in branded campaigns.

A well-maintained negative keyword strategy is one of the highest-ROI maintenance tasks in Google Ads management. Stores that review and update their negatives weekly consistently outperform those that set-and-forget their campaigns. Oneonic manages negative keyword strategy as part of our complete Google Ads service for Shopify stores. View our results or get a free negative keyword audit for your account.