Tough Phones Australia 2020, strong; not easily broken or made weaker: 2. If you just got mugged, lost your job, got the flu, and broke your toe, you're having a really tough week. adj. tough synonyms, tough pronunciation, tough translation, English dictionary definition of tough. Definition of tough adjective in Oxford Advanced Learner's Dictionary. 38 made out of brass 1. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. TOUGH definition: 1. 2. tough·er , tough·est 1. lppje, p4x, q4tmb, fclnr0x, wp2st1, zazzxi4q, gvvr4c, bzxfuvk, qne938q, cjg,