资料来源 : pyDict

挑战性的,令人鼓舞的,挑拨的,刺激的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Challenge \Chal"lenge\, v. t. [imp. & p. p. {Challenged}; p. pr.
   & vb. n. {Challenging}.] [OE. chalengen to accuse, claim, OF.
   chalengier, chalongier, to claim, accuse, dispute, fr. L.
   calumniar to attack with false accusations. See {Challenge},
   n., and cf. {Calumniate}.]
   1. To call to a contest of any kind; to call to answer; to
      defy.

            I challenge any man to make any pretense to power by
            right of fatherhood.                  --Locke.

   2. To call, invite, or summon to answer for an offense by
      personal combat.

            By this I challenge him to single fight. --Shak.

   3. To claim as due; to demand as a right.

            Challenge better terms.               --Addison.

   4. To censure; to blame. [Obs.]

            He complained of the emperors . . . and challenged
            them for that he had no greater revenues . . . from
            them.                                 --Holland.

   5. (Mil.) To question or demand the countersign from (one who
      attempts to pass the lines); as, the sentinel challenged
      us, with ``Who comes there?''

   6. To take exception to; question; as, to challenge the
      accuracy of a statement or of a quotation.

   7. (Law) To object to or take exception to, as to a juror, or
      member of a court.

   8. To object to the reception of the vote of, as on the
      ground that the person in not qualified as a voter. [U.
      S.]

   {To challenge to the} {array, favor, polls}. See under
      {Challenge}, n.

资料来源 : WordNet®

challenging
     adj 1: requiring full use of your abilities or resources;
            "ambitious schedule"; "performed the most challenging
            task without a mistake" [syn: {ambitious}]
     2: stimulating interest or thought; "a challenging hypothesis";
        "a thought-provoking book" [syn: {thought-provoking}]
     3: disturbingly provocative; "an intriguing smile" [syn: {intriguing}]