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challenge

chal·lenge [ chállənj ]


transitive verb  (past and past participle chal·lenged, present participle chal·leng·ing, 3rd person present singular chal·leng·es)
Definition:
 
1. invite somebody to compete: to invite somebody to participate in a fight, contest, or competition

2. dare somebody: to dare somebody to do something

3. call something into question: to call something into question by demanding an explanation, justification, or proof

4. stimulate intellect: to stimulate somebody by making demands on the intellect

5. order somebody to produce identification: to order somebody to stop and produce identification or a password

6. law object to inclusion of juror: to make a formal objection against the inclusion of a prospective juror on a jury

7. medicine test whether something produces allergy: to expose a person or animal to a substance in order to determine whether an allergy or other adverse reaction will occur



noun  (plural chal·leng·es)
Definition:
 
1. invitation to take part in contest: an invitation to somebody to compete in a fight, contest, or competition

2. stimulating test of abilities: a test of somebody's abilities, or a situation that tests somebody's abilities in a stimulating way

3. questioning of something: a questioning of something by demanding an explanation, justification, or proof

4. demand for identification: an order to somebody to stop and produce identification or a password

5. law objection against juror: an objection against the inclusion of somebody on a jury

6. claim against voting eligibility: a claim that somebody is not entitled to a vote or that a vote is invalid

7. medicine testing for allergy: exposure of a person or animal to a substance in order to determine whether an allergy or other adverse reaction will occur

[13th century. Via Old French c(h)alengier "accuse" < Latin calumniare "accuse falsely" < calumnia "false accusation"]

chal·lenge·a·ble adjective
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