Multilingual keyword research for adult sites: start fresh in every language

01Why translated keywords fail

A direct translation of an English keyword is often a phrase nobody in the target market types. Everyday words for products differ, some words sound clinical and others crude, and the balance between them changes from country to country. Even within one language, searches in France, Belgium and Quebec do not line up neatly.

02A five-step method

03Safe-for-work terms carry the load

For most lawful adult businesses, the pages that rank and convert are category, guide and help pages written in safe-for-work language. Explicit terms belong only on pages built for them, labelled for SafeSearch and behind any required age check. Keeping that split in every language protects the open pages. How the language versions connect is covered in our entry on hreflang.

04Check with real data after launch

Once a language version is live, Search Console shows which queries bring people in from each country. Compare that with your research every month: add terms people really use, drop ones that never appear, and rewrite titles to match. The service behind this is multilingual SEO.

05Common mistakes

• Using one English list for every market.
• Researching the language but forgetting the country.
• Putting explicit terms on open, indexable pages.
• Targeting the same term with two pages in the same language.

06A research workflow per language

1. List the products and topics you sell or cover, in plain English.
2. Ask a native speaker how they would describe each one, before looking at any tool.
3. Check those terms in keyword tools set to the target country and language.
4. Look at local autocomplete suggestions and related searches.
5. Study the pages that rank: local shops, marketplaces and guides.
6. Group terms by intent and assign each group to one page.

07One product, five languages

Each language then has its own modifiers, such as water-based, silicone-based or for sensitive skin, and its own mix of shorter and longer searches. The German word looks nothing like the English one, which is why translated keyword lists so often miss.

08Compound words, gender and accents

Languages behave differently in search. German builds long compound words, so a single term may cover what English says in three words, and searchers use both the compound and the split form. French, Spanish and Italian nouns have gender and plural forms that change the term. Many searchers type without accents, so research should include unaccented spellings, while page text should use correct accents. A native researcher handles these naturally; a tool alone often does not.

09Same language, different countries

Spanish in Spain differs from Spanish in Mexico or Argentina, French in France from French in Belgium, Switzerland or Canada, and German in Germany from German in Austria and Switzerland. Product names, slang and spelling vary, and so do search volumes. Research each country you target separately, even when the language is shared, and decide whether one version can serve several countries or each needs its own.

10Mapping safe-for-work and explicit terms

For each topic, record the safe-for-work terms that suit open pages and the more explicit terms that may suit gated sections. In some languages a word that looks neutral is slang for something explicit, and the reverse happens too. A native speaker should flag these. The map protects open pages from SafeSearch filtering and keeps explicit language where it belongs.

11Marketplaces as a research source

Local marketplaces show how shoppers in each market search and how sellers describe products. Category names, bestseller lists and the words in product titles reveal common terms, and customer reviews show the questions and doubts people have. Use them as research, not as copy: the aim is to understand the language, not to repeat a competitor's text.

12Keeping the research current

Search habits change, new product types appear and slang moves. Review each language's keyword map twice a year against Search Console data from that version: the queries actually bringing visitors, and the ones where pages appear but are rarely clicked. Those two lists usually show the next pages to write and the titles to improve. The service behind this is on multilingual SEO.

13Turning research into a page plan

Research is only useful once each group of searches has a home. For every language, list the groups you found, the page that will answer each one, and the main term that page should use in its title and heading. Some groups will match pages you already have in English; others will need new pages because the market asks questions your original site never answered. A one-page map per language, kept beside the glossary, keeps writers and translators aligned and makes it easy to see gaps. The site-level picture is covered on multilingual SEO.

14When volumes are small

For niche products in smaller languages, keyword tools may show little or no search volume. That does not mean nobody searches; it often means the tools have too little data. Lean more on native speakers, local forums and marketplaces, and on Search Console data once pages are live. Small markets can be valuable precisely because few competitors bother to localise for them, and a carefully localised page may face little competition at all.

15Common traps by market

• Using the English brand term where locals use a generic word, or the reverse.
• Choosing a term that is explicit slang in that language for a safe-for-work page.
• Researching only one country for a language spoken in several.
• Ignoring how people search on phones, where shorter, conversational queries are common.

16Sharing research with writers

Keyword research helps only if writers use it. Give each writer the page's main term, two or three related terms and the questions searchers ask, inside the brief rather than as a separate spreadsheet. Ask them to use the main term in the title, heading and opening naturally, and to answer the questions on the page. Then check after a few months whether the page attracts the searches it was written for, and adjust. The briefing method is in our guide to localising adult content.

17References

• Search Central (Google)

Official and research sources referred to above, linked to their home pages.

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