BEHAVIORIST Scrabble 19 Words With Friends 20 Definition adjective of or relating to behaviorism. — synonyms: behavioristic, behaviouristic, behaviourist noun a psychologist who subscribes to behaviorism. — synonyms: behaviourist See all 765 words you can make from BEHAVIORIST → 11-letter words Words starting with B Words ending with T ← Unscramble different letters