OVERMASTERING /əʊvəˈmɑːstəɹɪŋ/ Scrabble 19 Words With Friends 23 Definition OVERMASTERING is the present participle of OVERMASTER. verb OVERMASTER: overcome by superior force. See all 2507 words you can make from OVERMASTERING → 13-letter words Words starting with O Words ending with G ← Unscramble different letters