挑戦の定義と意味 | ブリタニカ辞典

Challenge Definition & Meaning | Britannica Dictionary The Britannica Dictionary mobile search Home Ask the Editor Word of the Day Quizzes Core Vocabulary Browse the Dictionary × Britannica Homepage Ask the Editor Word of the Day Quizzes Core Vocabulary Browse the Dictionary The Britannica Dictionary challenge 4 ENTRIES FOUND: challenge (verb) challenge (noun) challenged (adjective) rise (verb) 1 challenge / ˈ tʃælənʤ/ verb challenges ; challenged ; challenging 1 challenge / ˈ tʃælənʤ/ verb challenges ; challenged ; challenging Britannica Dictionary definition of CHALLENGE [ + object ] 1 : to say or show that (something) may not be true, correct, or legal : dispute A number of doctors are challenging the study's claims. The new lawsuit challenges the lower court's decision. The new data challenges many old assumptions. [=the new data gives people reasons to doubt many old assumptions] [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 2 a : to question the action or authority of (someone) She's been challenged on her handling of the problem. None of them were willing to challenge the referee on the call. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples b law : to question whether (someone) should serve on a jury challenge a juror [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 3 : to test the ability, skill, or strength of (someone or something) : to be difficult enough to be interesting to (someone) It's a game that will challenge a child's imagination. The work doesn't challenge him anymore, and he's often bored. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 4 : to invite (someone) to compete in a game, fight, etc. — usually + to I challenge you to a game of chess. The duke challenged him to a duel. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 5 : to order (someone) to stop and prove who he or she is The sentry challenged the stranger at the gate. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples — challenger noun , plural challengers [ count ] He hopes to be the governor's challenger in the next election. [=the candidate running against the governor] The boxing match pitted the two-time champion against his challenger . [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 2 challenge / ˈ tʃælənʤ/ noun plural challenges 2 challenge / ˈ tʃælənʤ/ noun plural challenges Britannica Dictionary definition of CHALLENGE 1 : a difficult task or problem : something that is hard to do [ count ] The next major challenge for the company is to improve its distribution capabilities. Teaching adolescents can be quite a challenge . The band feels ready for new challenges . If he takes on the new project he will face the greatest challenge of his career. Passing the test was hardly a challenge [=was very easy] for her. The coach is confident that you will rise to the challenge . [=the coach is confident that you will succeed] Management is seeking ways to better meet the challenge of future growth. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples [ noncount ] The ski slope offers a high degree of challenge . [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 2 [ count ] : an action, statement, etc., that is against something : a refusal to accept something as true, correct, or legal — often + to The lawsuit is a challenge to the lower court's decision. Both teachers have had to deal with many challenges to their authority. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 3 [ count ] a : an invitation to compete in a game, fight, etc. Do you accept my challenge to a game of chess? [+] more examples [-] hide examples [+] Example sentences [-] Hide examples b : an attempt to defeat someone in a competition The senator may face a challenge from within her own party. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples 4 [ count ] : an order to someone to stop and say who he or she is The intruder fled at the sentry's challenge . [+] more examples [-] hide examples [+] Example sentences [-] Hide examples ASK THE EDITOR Which word should I use after essential , for or to ? See the answer » QUIZZES Vocabulary Quiz Test your word power Take the Quiz » Name That Thing Take our visual quiz Test Your Knowledge » WORD OF THE DAY concrete : a hard, strong material that is used for building and made by mixing cement, sand, and broken rocks with water Learn More » About Us & Legal Info Contact Us Privacy Notice Terms of Use Pronunciation Symbols Help d="M0 12c0 5.123 3.211 9.497 7.73 11.218-.11-.937-.227-2.482.025-3.566.217-.932 1.401-5.938 1.401-5.938s-.357-.715-.357-1.774c0-1.66.962-2.9 2.161-2.9 1.02 0 1.512.765 1.512 1.682 0 1.025-.653 2.557-.99 3.978-.281 1.189.597 2.159 1.769 2.159 2.123 0 3.756-2.239 3.756-5.471 0-2.861-2.056-4.86-4.991-4.86-3.398 0-5.393 2.549-5.393 5.184 0 1.027.395 2.127.889 2.726a.36.36 0 0 1 .083.343c-.091.378-.293 1.189-.332 1.355-.053.218-.173.265-.4.159-1.492-.694-2.424-2.875-2.424-4.627 0-3.769 2.737-7.229 7.892-7.229 4.144 0 7.365 2.953 7.365 6.899 0 4.117-2.595 7.431-6.199 7.431-1.211 0-2.348-.63-2.738-1.373 0 0-.599 2.282-.744 2.84-.282 1.084-1.064 2.456-1.549 3.235C9.584 23.815 10.77 24 12 24c6.627 0 12-5.373 12-12S18.627 0 12 0 0 5.373 0 12"> © 2026 Encyclopædia Britannica, Inc.