challenge

nouns

a demanding or stimulating situation
"they reacted irrationally to the challenge of Russian power"
challenge
is a type of (narrower)
the general state of things; the combination of circumstances at a given time
"the present international situation is dangerous"; "wondered how such a state of affairs had come about"; "eternal truths will be neither true nor eternal unless they have fresh meaning for every new social situation"- Franklin D.Roosevelt
situation, state of affairs
a call to engage in a contest or fight
challenge
is a type of (narrower)
the use of language to perform some act
speech act
questioning a statement and demanding an explanation
"his challenge of the assumption that Japan is still our enemy"
challenge
is a type of (narrower)
a request for information
inquiring, questioning
a formal objection to the selection of a particular person as a juror
challenge
is a type of (narrower)
the speech act of objecting
objection
a demand by a sentry for a password or identification
challenge
is a type of (narrower)
an urgent or peremptory request
"his demands for attention were unceasing"
demand

verbs

take exception to
"She challenged his claims"
challenge, dispute, gainsay
is derived from
challengeable
issue a challenge to
"Fischer challenged Spassky to a match"
challenge
is derived from
challenger
is a type of (narrower)
ask someone in a friendly way to do something
bid, invite
ask for identification
"The illegal immigrant was challenged by the border guard"
challenge
entails
come to a halt, stop moving
"the car stopped"; "She stopped in front of a store window"
halt, stop
is a type of (narrower)
express the need or desire for; ask for
"She requested an extra bed in her room"; "She called for room service"
bespeak, call for, quest, request
raise a formal objection in a court of law
challenge, take exception