INCOHERENT Scrabble 15 Words With Friends 17 Definition adjective without logical or meaningful connection. adjective (physics) of waves having no stable definite or stable phase relation. adjective unable to express yourself clearly or fluently. — synonyms: tongue-tied See all 341 words you can make from INCOHERENT → 10-letter words Words starting with I Words ending with T ← Unscramble different letters