BIDIRECTIONAL /ˌbaɪdɪˈɹɛkʃənəl/ Scrabble 18 Words With Friends 22 Scrabble letter values: B3I1D2I1R1E1C3T1I1O1N1A1L1 = 18 Definition adjective reactive or functioning or allowing movement in two usually opposite directions. See all 1564 words you can make from BIDIRECTIONAL → 13-letter words Words starting with B Words ending with L ← Unscramble different letters