noun

challenge

challenge, dare, difficult task

Climbing the mountain was a real challenge.

Climbing the mountain was a real challenge.

He accepted the challenge to a game of chess.

He accepted the challenge to a game of chess.

((a challenge)) ((to sb.)) a difficult task for (sb.) It was a big challenge to him.

((a challenge)) ((to do sth.)) an invitation to do (sth.) He accepted the challenge to run a marathon.

Synonyms: difficulty, dare, obstacle; Antonyms: easy task, certainty

From Old French 'chalenge', meaning 'accusation, claim'.

Think of a 'challenge' as a call to engage in a difficult task or competition.

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