challenge
verb, noun, noun_verb B1to invite someone to engage in a contest, fight, or test of skill; to test the abilities of; something difficult that tests your ability; also to question something
A call to take part in a contest or competition, especially a demanding or stimulating one; a task or situation that tests someone's abilities.
A task or situation that tests someone's abilities or resources in a demanding but stimulating way.
A call to take part in a contest or competition, especially a duel; a task or situation that tests someone's abilities
to invite to compete; to question or dispute
a difficult task or problem that requires effort to overcome; to question or dispute; A call to take part in a contest or competition, especially a demanding or stimulating one; a task or situation that tests someone's abilities.
A task or situation that tests someone's abilities or resources in a demanding but stimulating way.
A call to take part in a contest or competition, especially a duel; a task or situation that tests someone's abilities
to invite to compete; to question or dispute
a difficult task or problem that requires effort to overcome; to question or dispute
In context
She challenges herself to run faster.
Plastic pollution poses a significant challenge to global health.
obstacle,difficulty,test
solution,ease,simplicity
challenge oneself,challenge authority,challenge a decision
Verb forms
Past: challenged · Past participle: challenged · -ing: challenging