Princeton's WordNet

1. street fighter, tough(noun)

   someone who learned to fight in the streets rather than being formally trained in the sport of boxing

2. hood, hoodlum, goon, punk, thug, tough, toughie, strong-armer(noun)

   an aggressive and violent young criminal

3. bully, tough, hooligan, ruffian, roughneck, rowdy, yob, yobo, yobbo(adj)

   a cruel and brutal fellow

4. tough(adj)

   not given to gentleness or sentimentality

   "a tough character"

5. rugged, tough(adj)

   very difficult; severely testing stamina 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. tough, toughened(adj)

   physically toughened

   "the tough bottoms of his feet"

7. sturdy, tough(adj)

   substantially made or constructed

   "sturdy steel shelves"; "sturdy canvas"; "a tough all-weather fabric"; "some plastics are as tough as metal"

8. ruffianly, tough(adj)

   violent and lawless

   "the more ruffianly element"; "tough street gangs"

9. bad, tough(adj)

   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"

10. tough(adj)

    resistant to cutting or chewing

11. hard, tough(adj)

    unfortunate or hard to bear

    "had hard luck"; "a tough break"

12. baffling, elusive, knotty, problematic, problematical, tough(adj)

    making great 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"

Kernerman English Learner's Dictionary

1. tough(adjective)ʌf

   physically or emotionally difficult

   a tough walk through the jungle; It's been tough for her since he died.

2. toughʌf

   strong and not likely to break easily

   a tough material

3. toughʌf

   (of a person) not easily upset or defeated

   She's much tougher than she looks.

4. toughʌf

   severe

   a tough jail sentence

5. toughʌf

   (of food) difficult to chew

   a tough steak

Wiktionary

1. tough(Noun)

   A person who obtains things by force; a thug or bully.

   They were doing fine until they encountered a bunch of toughs from the opposition.

2. tough(Verb)

   To endure.

3. tough(Verb)

   To toughen.

4. tough(Adjective)

   strong and resilient; sturdy

   The tent, made of tough canvas, held up to many abuses.

5. tough(Adjective)

   difficult to cut or chew

   To soften a tough cut of meat, the recipe suggested simmering it for hours.

6. tough(Adjective)

   rugged or physically hardy

   Only a tough species will survive in the desert.

7. tough(Adjective)

   Stubborn.

   He had a reputation as a tough negotiator.

8. tough(Adjective)

   harsh or severe

9. tough(Adjective)

   rowdy or rough.

   A bunch of the tough boys from the wrong side of the tracks threatened him.

10. tough(Adjective)

    difficult or demanding

    This is a tough crowd.

11. tough(Adjective)

    Undergoing plastic deformation before breaking.

Origin: From toh, from tanhuz.

Webster Dictionary

1. Tough(u)

   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(u)

   not easily broken; able to endure hardship; firm; strong; as, tough sinews

3. Tough(u)

   not easily separated; viscous; clammy; tenacious; as, tough phlegm

4. Tough(u)

   stiff; rigid; not flexible; stubborn; as, a tough bow

5. Tough(u)

   severe; violent; as, a tough storm

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