[{"Bold_text": "adjective", "List Items": ["strong and durable; not easily broken or cut.Synonyms: hard , firm Antonyms: fragile", "not brittle or tender.", "difficult to masticate, as food:a tough steak.", "of viscous consistency, as liquid or semiliquid matter:tough molasses.", "capable of great endurance; sturdy; hardy:tough troops.Synonyms: durable Antonyms: weak , feeble", "not easily influenced, as a person; unyielding; stubborn:a tough man to work for.Synonyms: inflexible", "hardened; incorrigible:a tough criminal.", "difficult to perform, accomplish, or deal with; hard, trying, or troublesome:a tough problem.", "hard to bear or endure (often used ironically):tough luck.", "vigorous; severe; violent:a tough struggle.", "vicious; rough; rowdyish:a tough character;a tough neighborhood.", "practical, realistic, and lacking in sentimentality; tough-minded.", "Slang.remarkably excellent; first-rate; great."]}, {"Bold_text": "adverb", "List Items": ["in a tough manner."]}, {"Bold_text": "noun", "List Items": ["a ruffian; rowdy."]}]