|Thesaurus.co - Free Online 17 Language Thesaurus|
As an example, synonyms of teff:
Thesaurus, Co. is a free online multilingual international thesaurus designed as a mobile and desktop destination featuring Websters, Roget, and Oxford visual libraries. This open service also features slang, urban, and other un-orthodox multilanguage phrases and jargon support.
English, Spanish, French, German, Italian, Arabic, Greek, Bulgarian, Czech, Irish, Hungarian, Norwegian, Polish, Romanian, Russian, Slovak, Slovenian.