Stemming defines how AddSearch analyzes users’ search queries and textual content of your site. The language-specific stemmer detects endings and plurals of the words. For example, the English stemming matches “filtering” and “filters” or “phone” and “phones,”

By default, all indices use a Generic stemming algorithm. It works with any language and with multi-lingual content. You should use language-specific stemming on a website with a single language or languages with the same stemming.


  1. Login to your AddSearch Account
  2. Go to Other settings under Setup
  3. Scroll to Stemming section
  4. Choose specific language or Generic Stemming from the drop-down menu
  5. Click Save to save changes

Picture of Stemming settings in AddSearch Dashboard.

If you want to know more about language-based search results and supported user interface translations, check the AddSearch for multilingual websites manual.

Currently, the following stemming settings are available. Contact us if you need additional languages.

  • Generic stemming (deafult)
  • Arabic
  • Chinese
  • English
  • Finnish
  • French
  • German
  • Italian
  • Japanese
  • Portuguese
  • Russian
  • Spanish
  • Swedish