挑戦 - The Free Dictionaryによる定義

Challenge - definition of challenge by The Free Dictionary Challenge - definition of challenge by The Free Dictionary https://www.thefreedictionary.com/challenge Printer Friendly challenge Also found in: Thesaurus , Medical , Legal , Acronyms , Idioms , Encyclopedia , Wikipedia . chal·lenge (chăl′ənj) n. 1. a. A call to engage in a contest, fight, or competition: a challenge to a duel. b. An act or statement of defiance; a call to confrontation: a challenge to the government's authority. 2. A demand for explanation or justification; a calling into question: a challenge to a theory. 3. A sentry's call to an unknown party for proper identification. 4. A test of one's abilities or resources in a demanding but stimulating undertaking: a career that offers a challenge. 5. A claim that a vote is invalid or that a voter is unqualified. 6. Law a. A formal objection to the inclusion of a prospective juror in a jury. b. A legal case testing the validity of an action taken, particularly by the government. 7. Immunology The induction or evaluation of an immune response in an organism by administration of a specific antigen to which it has been sensitized. v. chal·lenged , chal·leng·ing , chal·leng·es v. tr. 1. a. To call to engage in a contest, fight, or competition: challenged me to a game of chess. b. To invite with defiance; dare: challenged him to contradict her. c. To confront or struggle with (something) as a test of one's abilities: rafters challenging the rapids. 2. To take exception to; call into question; dispute: a book that challenges established beliefs. 3. To order to halt and be identified, as by a sentry. 4. Law a. To take formal objection to (a prospective juror). b. To bring a legal case testing the validity of an action, particularly by the government. 5. To question the qualifications of (a voter) or the validity of (a vote). 6. To have due claim to; call for: events that challenge our attention. 7. To summon to action, effort, or use; stimulate: a problem that challenges the imagination. 8. Immunology To induce or evaluate an immune response in (an organism) by administering a specific antigen to which it has been sensitized. v. intr. 1. To make or give voice to a challenge. 2. To begin barking upon picking up the scent. Used of hunting dogs. [Middle English chalenge , from Old French, from Latin calumnia , trickery, false accusation ; see calumny . V., Middle English chalengen , from Old French chalangier , from Latin calumniārī , from calumnia .] chal′lenge·a·ble adj. American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. challenge ( ˈtʃælɪndʒ ) vb ( mainly tr ) 1. to invite or summon (someone to do something, esp to take part in a contest) 2. ( also intr ) to call (something) into question; dispute 3. to make demands on; stimulate: the job challenges his ingenuity . 4. (Military) to order (a person) to halt and be identified or to give a password 5. (Law) law to make formal objection to (a juror or jury) 6. to lay claim to (attention, etc) 7. (Hunting) ( intr ) hunting (of a hound) to cry out on first encountering the scent of a quarry 8. (Veterinary Science) to inject (an experimental animal immunized with a test substance) with disease microorganisms to test for immunity to the disease n 9. a call to engage in a fight, argument, or contest 10. a questioning of a statement or fact; a demand for justification or explanation 11. a demanding or stimulating situation, career, object, etc 12. (Military) a demand by a sentry, watchman, etc, for identification or a password 13. (Government, Politics & Diplomacy) US an assertion that a person is not entitled to vote or that a vote is invalid 14. (Law) law a formal objection to a person selected to serve on a jury ( challenge to the polls ) or to the whole body of jurors ( challenge to the array ) [C13: from Old French chalenge, from Latin calumnia calumny] ˈchallengeable adj ˈchallenger n Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 chal•lenge (ˈtʃæl ɪndʒ) n., v. -lenged, -leng•ing. n. 1. a summons to engage in contest, as of skill or strength. 2. something that by its nature or character serves as a serious test: Space exploration offers a challenge to humankind. 3. a call to fight, as in a duel. 4. a demand to explain, justify, etc. 5. difficulty in a job or undertaking that is stimulating to one engaged in it. 6. the demand of a military sentry for identification or a countersign. 7. a formal objection to the qualifications of a juror or jury. 8. the assertion that a vote is invalid or that a voter is not legally qualified. 9. the assessment of a specific function in an organism by exposing it to a provocative substance or activity. v.t. 10. to summon to a contest. 11. to take exception to; call in question. 12. to demand as something due or rightful. 13. to halt and demand identification or a countersign from. 14. to take formal exception to (a juror or jury). 15. to invite; arouse: a matter which challenges attention. 16. to assert that (a vote) is invalid. 17. to assert that (a voter) is not qualified to vote. 18. to inject (an organism) with a specific substance to assess its physiological or immunological activity. v.i. 19. to issue a challenge. [1175–1225; Middle English chalenge < Old French chalonge < Latin calumnia calumny ] chal′lenge•a•ble, adj. Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved. challenge Any process carried out by one unit or person with the object of ascertaining the friendly or hostile character or identity of another. See also countersign; password. Dictionary of Military and Associated Terms. US Department of Defense 2005. challenge Past participle: challenged Gerund: challenging Imperative Present Preterite Present Continuous Present Perfect Past Continuous Past Perfect Future Future Perfect Future Continuous Present Perfect Continuous Future Perfect Continuous Past Perfect Continuous Conditional Past Conditional Imperative challenge challenge Present I challenge you challenge he/she/it challenges we challenge you challenge they challenge Preterite I challenged you challenged he/she/it challenged we challenged you challenged they challenged Present Continuous I am challenging you are challenging he/she/it is challenging we are challenging you are challenging they are challenging Present Perfect I have challenged you have challenged he/she/it has challenged we have challenged you have challenged they have challenged Past Continuous I was challenging you were challenging he/she/it was challenging we were challenging you were challenging they were challenging Past Perfect I had challenged you had challenged he/she/it had challenged we had challenged you had challenged they had challenged Future I will challenge you will challenge he/she/it will challenge we will challenge you will challenge they will challenge Future Perfect I will have challenged you will have challenged he/she/it will have challenged we will have challenged you will have challenged they will have challenged Future Continuous I will be challenging you will be challenging he/she/it will be challenging we will be challenging you will be challenging they will be challenging Present Perfect Continuous I have been challenging you have been challenging he/she/it has been challenging we have been challenging you have been challenging they have been challenging Future Perfect Continuous I will have been challenging you will have been challenging he/she/it will have been challenging we will have been challenging you will have been challenging they will have been challenging Past Perfect Continuous I had been challenging you had been challenging he/she/it had been challenging we had been challenging you had been challenging they had been challenging Conditional I would challenge you would challenge he/she/it would challenge we would challenge you would challenge they would challenge Past Conditional I would have challenged you would have challenged he/she/it would have challenged we would have challenged you would have challenged they would have challenged Collins English Verb Tables © HarperCollins Publishers 2011 Thesaurus Antonyms Related Words Synonyms Legend: Switch to new thesaurus Noun 1. challenge - a demanding or stimulating situation; "they reacted irrationally to the challenge of Russian power" situation , state of affairs - 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 2. challenge - a call to engage in a contest or fight speech act - the use of language to perform some act dare , daring - a challenge to do something dangerous or foolhardy; "he could never refuse a dare" confrontation - a bold challenge call-out - a challenge to a fight or duel defiance - a hostile challenge calling into question , demand for explanation - a challenge to defend what someone has said demand for identification - as by a sentry gantlet , gauntlet - to offer or accept a challenge; "threw down the gauntlet"; "took up the gauntlet" 3. challenge - questioning a statement and demanding an explanation; "his challenge of the assumption that Japan is still our enemy" inquiring , questioning - a request for information 4. challenge - a formal objection to the selection of a particular person as a juror objection - the speech act of objecting 5. challenge - a demand by a sentry for a password or identification demand - an urgent or peremptory req