SynonymDefinitionAntonym.com - English Synonym Dictionary

An aggressive and violent young criminal

A cruel and brutal fellow

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

Resistant to cutting or chewing

Physically toughened

Not given to gentleness or sentimentality

Unfortunate or hard to bear

Substantially made or constructed

Feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')

Violent and lawless

Very difficult; severely testing stamina or resolution

Making great mental demands; hard to comprehend or solve or believe