A related idea I've thought of is finding (comparatively) long words that have different definitions in different languages. E.g. "fetter" (English/German). In

A related idea I've thought of is finding (comparatively) long words that have different definitions in different languages. E.g. "fetter" (English/German). In theory you only need a wordlist for each language, but in practice, most common words across languages also share definitions (e.g. "unintelligent" in English/German).