Definition

• n. something difficult that tests your ability
• n. a demand to prove identity
• v. to invite someone to compete
• v. to question whether something is true or right

Example

Learning a new language can be a real challenge.

学习一门新语言可能是一项真正的挑战。

Word familychalleng-

n.

challengerL6

adj.

challengedL4challengingL4unchallengedL5