Meaning of “tough” - Learner’s Dictionary

tough

adjective uk us /tʌf/
DIFFICULT

B2 difficult:

He's had a tough time at work recently.
We've had to make some tough decisions.
SEVERE

Tough rules are severe:

tough new laws on noise pollution
STRONG THING

B2 not easily damaged, cut, etc:

Children's shoes have to be tough.
This meat's very tough.
STRONG PERSON

B2 physically strong and not afraid of violence:

a tough guy
DETERMINED

determined and not easily upset:

You have to be tough to survive in politics.
UNFAIR

unfair or unlucky:

It can be tough on kids when parents get divorced.

(Definition of “tough” from the Cambridge Learner’s Dictionary © Cambridge University Press)