専門家の定義と意味 - メリアム・ウェブスター

EXPERT Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition noun adjective verb noun 3 noun adjective verb Synonyms Synonym Chooser Example Sentences Word History Phrases Containing Rhymes Entries Near Cite this Entry Citation Kids Definition Kids Legal Definition Legal More from M-W Show more Show more Citation Kids Legal More from M-W Save Word To save this word, you'll need to log in. Log In expert 1 of 3 noun ex·​pert ˈek-ˌspərt Synonyms of expert Take our 3 question quiz on expert Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. : one with the special skill or knowledge representing mastery of a particular subject Quiz: Which word is closest in meaning to expert ? expert 2 of 3 adjective ex·​pert ˈek-ˌspərt ik-ˈspərt 1 : having, involving, or displaying special skill or knowledge derived from training or experience 2 obsolete : experienced expertly adverb expertness noun expert 3 of 3 verb ex·​pert ˈek-ˌspərt experted ; experting ; experts intransitive verb : to serve as an expert Synonyms of expert Relevance Noun master guru virtuoso wizard scholar specialist artist authority whiz maestro Adjective virtuoso skillful See All Synonyms & Antonyms in Thesaurus Choose the Right Synonym for expert proficient , adept , skilled , skillful , expert mean having great knowledge and experience in a trade or profession. proficient implies a thorough competence derived from training and practice. proficient in translating foreign languages adept implies special aptitude as well as proficiency. adept at doing long division skilled stresses mastery of technique. a skilled surgeon skillful implies individual dexterity in execution or performance. skillful drivers expert implies extraordinary proficiency and often connotes knowledge as well as technical skill. expert in the evaluation of wines Examples of expert in a Sentence Noun She was an acknowledged expert on child development. an expert at planning dinner parties Adjective We received some expert advice. The company has become expert at adapting its products for new clients. Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . Noun Feerick is also an expert in Presidential incapacity. — Diego Lasarte, New Yorker , 4 May 2026 Local experts question whether the tax holiday has made a difference for Hoosier consumers. — Maya Wilkins, Chicago Tribune , 3 May 2026 Adjective For full daily and monthly horoscopes as well as expert readings, see our full Horoscopes experience. — Usa Today, USA Today , 28 Apr. 2026 Judge Liman did not immediately rule on whether the expert testimony on the topics would be permitted. — Cheyenne Roundtree, Rolling Stone , 28 Apr. 2026 Verb Pemberton went to Paris and to expert Baschet musician Thomas Bloch to record the ‘40s-era organ made of glass tubes of varying length, played with wet fingertips. — Sarah Shachat, IndieWire , 25 Mar. 2026 The three-day tour, which began Sunday, was for intermediate to expert skiers, according to the company's website. — ABC News , 19 Feb. 2026 See All Example Sentences for expert Word History Etymology Noun borrowed from French, going back to Middle French, derivative of expert expert entry 2 Adjective Middle English, borrowed from Anglo-French, borrowed from Latin expertus "tested, shown to be true," from past participle of experīrī "to put to the test, attempt, have experience of, undergo" — more at experience entry 1 Verb derivative of expert entry 1 First Known Use Noun 1535, in the meaning defined above Adjective 14th century, in the meaning defined at sense 2 Verb circa 1889, in the meaning defined above Time Traveler The first known use of expert was in the 14th century See more words from the same century Phrases Containing expert efficiency expert expert opinions expert system expert witness Rhymes for expert inexpert See All Rhymes for expert Browse Nearby Words experiment station expert expertise See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Expert.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/expert. Accessed 4 May. 2026. Copy Citation Kids Definition expert 1 of 2 adjective ex·​pert ˈek-ˌspərt ik-ˈspərt : showing special skill or knowledge gained from training or experience expert advice expertly adverb expertness noun expert 2 of 2 noun ex·​pert ˈek-ˌspərt : a person with special skill in or knowledge of a subject Legal Definition expert noun ex·​pert : a person with special or superior skill or knowledge in a particular area see also expert witness at witness More from Merriam-Webster on expert Nglish: Translation of expert for Spanish Speakers Last Updated: 4 May 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day scrupulous See Definitions and Examples » Get Word of the Day daily email! 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