difficult

Definitions

Requiring great effort or exertion; not easy.

Hard to please, satisfy, or manage; troublesome.

Characterized by hardship or adversity.

Examples

It is often difficult to learn a new language without consistent practice.

The math problem was so difficult that none of the students could solve it.

Synonyms

arduous challenging demanding strenuous tough laborious formidable

Antonyms

easy simple effortless facile straightforward uncomplicated manageable