5. (adj)rugged, tough very difficult; severely testingstamina or resolution "a rugged competitive examination"; "the rugged conditions of frontier life"; "the competition was tough"; "it's a tough life"; "it was a tough job"
6. (adj)tough, toughened physically toughened "the tough bottoms of his feet"
7. (adj)sturdy, tough substantially made or constructed "sturdy steel shelves"; "sturdy canvas"; "a tough all-weather fabric"; "some plastics are as tough as metal"
8. (adj)ruffianly, tough violent and lawless "the more ruffianly element"; "tough street gangs"
9. (adj)bad, tough feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad') "my throat feels bad"; "she felt bad all over"; "he was feeling tough after a restless night"
11. (adj)hard, tough unfortunate or hard to bear "had hard luck"; "a tough break"
12. (adj)baffling, elusive, knotty, problematic, problematical, tough makinggreat mental demands; hard to comprehend or solve or believe "a baffling problem"; "I faced the knotty problem of what to have for breakfast"; "a problematic situation at home"
1. (adjective)tough physically or emotionally difficult a tough walk through the jungle; It's been tough for her since he died.
2. tough strong and not likely to break easily a tough material
3. tough (of a person) not easily upset or defeated She's much tougher than she looks.
4. tough severe a tough jail sentence
5. tough (of food) difficult to chew a tough steak
Definition of 'Tough'
Webster Dictionary
1. Tough having the quality of flexibility without brittleness; yielding to force without breaking; capable of resisting great strain; as, the ligaments of animals are remarkably tough
2. Tough not easily broken; able to endure hardship; firm; strong; as, tough sinews
3. Tough not easily separated; viscous; clammy; tenacious; as, toughphlegm
4. Tough stiff; rigid; not flexible; stubborn; as, a tough bow
Definitions of Tough 
Afrikaans: sterk
Arabic: قوي، متين
Bulgarian: здрав
Brazilian: resistente
Czech: pevný
German: hart
Danish: stærk
Greek: σκληρός, γερός, ανθεκτικό
Spanish: resistente, fuerte
Estonian: vastupidav, kõva
Farsi: محکم
Finnish: kestävä
French: solide
Hebrew: חָזָק
Hindi: कड़ा
Croatian: čvrst, izdržljiv
Hungarian: kemény
Indonesian: kuat
Icelandic: sterkur
Italian: resistente
Japanese: 丈夫な
Korean: 부러지지 않는
Lithuanian: tvirtas
Latvian: stiprs; izturīgs
Malay: kuat
Dutch: sterk
Norwegian: robust, solid, seig
Polish: twardy
Persian: محکم
Pashto: پلې وزمه ( لكه ربړ ): كلك
Portuguese: resistente
Romanian: tare
Russian: прочный
Slovak: pevný
Slovenian: trd
Serbian: čvrst
Swedish: stark, seg, härdig
Thai: ที่ทนทาน
Turkish: sağlam
Taiwanese: 強韌的，不易磨損的
Ukrainian: міцний; цупкий; твердий
Urdu: سخت، ناقابل شکست
Vietnamese: mạnh, rắn
Chinese: 坚韧的，不易磨损的
