Search Result for "challenging": 
Wordnet 3.0


1. requiring full use of your abilities or resources;
- Example: "ambitious schedule"
- Example: "performed the most challenging task without a mistake"
[syn: ambitious, challenging]

2. stimulating interest or thought;
- Example: "a challenging hypothesis"
- Example: "a thought-provoking book"
[syn: challenging, thought-provoking]

3. disturbingly provocative;
- Example: "an intriguing smile"
[syn: challenging, intriguing]

The Collaborative International Dictionary of English v.0.48:

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. [1913 Webster] I challenge any man to make any pretense to power by right of fatherhood. --Locke. [1913 Webster] 2. To call, invite, or summon to answer for an offense by personal combat. [1913 Webster] By this I challenge him to single fight. --Shak. [1913 Webster] 3. To claim as due; to demand as a right. [1913 Webster] Challenge better terms. --Addison. [1913 Webster] 4. To censure; to blame. [Obs.] [1913 Webster] He complained of the emperors . . . and challenged them for that he had no greater revenues . . . from them. --Holland. [1913 Webster] 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?" [1913 Webster] 6. To take exception to; question; as, to challenge the accuracy of a statement or of a quotation. [1913 Webster] 7. (Law) To object to or take exception to, as to a juror, or member of a court. [1913 Webster] 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.] [1913 Webster] To challenge to the array, favor, polls. See under Challenge, n. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

challenging \challenging\ adj. 1. requiring full use of one's abilities or resources; as, challenging task. Syn: ambitious, demanding. [WordNet 1.5] 2. disposed to or engaged in defiance of established authority. Syn: insubordinate, resistant, resistive. [WordNet 1.5]
WordNet (r) 3.0 (2006):

challenging adj 1: requiring full use of your abilities or resources; "ambitious schedule"; "performed the most challenging task without a mistake" [syn: ambitious, challenging] 2: stimulating interest or thought; "a challenging hypothesis"; "a thought-provoking book" [syn: challenging, thought- provoking] 3: disturbingly provocative; "an intriguing smile" [syn: challenging, intriguing]
Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "challenging": alluring, arrogant, audacious, bold, brash, brassy, brazen, bumptious, cheeky, cocky, contemptuous, daring, defiant, defying, derisive, disdainful, disregardful, encouraging, energizing, exciting, galvanic, galvanizing, greatly daring, impertinent, impudent, insolent, inviting, pert, piquant, prompting, provocative, provoking, regardless of consequences, rousing, saucy, stimulant, stimulating, stimulative, stirring