Longman Dictionary of Contemporary English - outdo

~ v past tense outdid, past participle outdone, 3rd person singular present tense outdoes 1 to be better or more successful than someone else at doing something  (The economies of South East Asia are already outdoing Western competitors. | outdo sb in)  (skaters trying to outdo the others in grace and speed) 2 not to be outdone in order not to let someone else do better than you  (Not to be outdone by the rival country-clubs, the Glen Hills golf club put in a new swimming pool.)