Noun challenge has 5 senses
  1. challenge - a demanding or stimulating situation; "they reacted irrationally to the challenge of Russian power"
    --1 is a kind of
    situation, state of affairs
  2. challenge - a call to engage in a contest or fight
    --2 is a kind of
    speech act
    --2 has particulars:
     dare, daring; confrontation; call-out; defiance; calling into question, demand for explanation; demand for identification; gauntlet, gantlet
    Derived form: verb challenge2
  3. challenge - questioning a statement and demanding an explanation; "his challenge of the assumption that Japan is still our enemy"
    --3 is a kind of
    questioning, inquiring
    Derived form: verb challenge1
  4. challenge - a formal objection to the selection of a particular person as a juror
    --4 is a kind of
    Derived form: verb challenge4
  5. challenge - a demand by a sentry for a password or identification
    --5 is a kind of
    Derived form: verb challenge3
,Verb challenge has 4 senses
  1. challenge, dispute, gainsay - take exception to; "She challenged his claims"
    --1 is one way to contest, contend, repugn
    Derived form: noun challenge3
    Sample sentences:
    Somebody ----s something
    Somebody ----s somebody
  2. challenge - issue a challenge to; "Fischer challenged Spassky to a match"
    --2 is one way to
    invite, bid
    Derived forms: noun challenger1, noun challenge2
    Sample sentence:
    They challenge him to write the letter
  3. challenge - ask for identification; "The illegal immigrant was challenged by the border guard"
    --3 is one way to
    request, bespeak, call for, quest
    Derived form: noun challenge5
    Sample sentence:
    Somebody ----s somebody
  4. challenge, take exception - raise a formal objection in a court of law
    --4 is one way to object
    Derived form: noun challenge4
    Sample sentence:
    Somebody ----s PP