Tough
Part of speech: noun
Definition: A person who obtains things by force; a thug or bully.
Part of speech: adjective
Definition: strong and resilient; sturdy difficult to cut or chew rugged or physically hardy Stubborn. harsh or severe rowdy or rough. difficult or demanding Undergoing plastic deformation before breaking.
Part of speech: interjection
Definition: Used to indicate lack of sympathy
Part of speech: verb
Definition: To endure. To toughen.
Example sentence: Never give up, and be confident in what you do. There may be tough times, but the difficulties which you face will make you more determined to achieve your objectives and to win against all the odds.
Problematical
Part of speech: adjective
Definition: doubtful or disputeddubious or ambiguous