OPERATING /ˈɒpəɹeɪtɪŋ/ Scrabble 12 Words With Friends 15 Definition adjective involved in a kind of operation. adjective being in effect or operation. — synonyms: operational, in_operation(p), operating(a) Examples “to operate a machine”“Don't touch the operating machinery.” See all 510 words you can make from OPERATING → 9-letter words Words starting with O Words ending with G ← Unscramble different letters