Synonyms of TOUGHEST

What is another word for TOUGHEST
1.

Synonyms of TOUGHEST

adj - not given to gentleness or sentimentality

adj - very difficult

adj - physically toughened

adj - substantially made or constructed

adj - violent and lawless

adj - feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')

BAD 

adj - resistant to cutting or chewing

adj - unfortunate or hard to bear

adj - making great mental demands