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English definition of “tough”

tough

adjective (VIOLENT)    /tʌf/
likely to be violent or to contain violence; not kind or pleasant: a tough neighbourhood Many of the country's toughest criminals are held in this prison.Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly toughly     /ˈtʌf.li/ adverb These boots are very toughly (= strongly) made. The newspaper published a toughly worded article about racist behaviour. We live in a toughly competitive world.Physically strong and powerful toughness     /ˈtʌf.nəs/ C2 She has a reputation for toughness (= being strong and determined). They can't face the toughness of the competition.ComplexityDifficult to understandPower and intensityEnergy, force and power
(Definition of tough adjective (VIOLENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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