重要な同義語：274の類似語と対義語 | メリアム・ウェブスター類語辞典

IMPORTANT Synonyms: 274 Similar and Opposite Words | Merriam-Webster Thesaurus Est. 1828 Thesaurus Synonyms of important as in major as in influential as in arrogant as in proud as in major as in influential as in arrogant as in proud Example Sentences Entries Near Related Articles Cite this Entry Citation More from M-W Show more Show more Citation More from M-W Save Word To save this word, you'll need to log in. Log In important adjective im-ˈpȯr-tᵊnt Definition of important 1 as in major having great meaning or lasting effect the discovery of penicillin was a very important event in the history of medicine Synonyms & Similar Words Relevance major significant historic big meaningful much substantial tectonic exceptional monumental momentous pivotal distinguished remarkable eventful consequential crucial noteworthy decisive outstanding notable prominent material valuable distinctive great earthshaking strategic earth - shattering serious weighty worthy seminal worthwhile impressive key essential fatal critical famous fateful earnest vital sincere prestigious central eminent all - important illustrious grave noble notorious renowned heavy preeminent Antonyms & Near Antonyms unimportant small trivial insignificant little minor negligible inconsequential inconsiderable slight trifling worthless petty unknown obscure paltry anonymous nameless uncelebrated See More 2 as in influential having great power or influence Rachel Carson was an important figure in the environmental movement Synonyms & Similar Words influential significant powerful strong prominent potent mighty senior outstanding great heavy effective top distinguished efficient able notable famous capable heavy - duty celebrated noteworthy dominant high - level puissant competent prestigious renowned robust notorious dynamic eminent illustrious noble vigorous famed authoritarian energetic despotic autocratic tyrannical dictatorial forceful magisterial preeminent high - powered Antonyms & Near Antonyms unimportant little insignificant weak powerless helpless impotent feeble unknown flimsy obscure infirm frail anonymous ineffective incapable unfit nameless incompetent unqualified unskilled inept uncelebrated unskillful inexpert See More 3 as in arrogant having a feeling of superiority that shows itself in an overbearing attitude an important businessman who always expects special treatment wherever he goes Synonyms & Similar Words arrogant superior dominant cavalier masterful proud domineering assumptive high - and - mighty uppity dominating pretentious presumptuous bumptious uppish supercilious presuming huffish toplofty pompous imperious sniffy haughty high - hat lofty huffy smug high - handed peremptory authoritarian highfalutin chesty patronizing self - assertive overweening vain magisterial saucy bossy impudent pontifical disdainful snobbish condescending lordly stiff - necked snobby self - asserting boastful vainglorious impertinent egocentric bombastic snooty narcissistic cocky complacent uninhibited self - affected hubristic conceited self - centered egotistic blusterous egoistic prideful pontificating bragging braggy self - pleased swaggering immodest forward self - applauding extroverted blustery self - complacent self - satisfied stuck - up unreserved self - flattering orgulous brash self - conceited self - loving braggart self - promoting Antonyms & Near Antonyms modest humble unpretentious lowly timid subdued shy shrinking passive bashful introverted diffident unarrogant unobtrusive sheepish compliant unassuming deferential quiet demure mousy submissive unaggressive meek overmodest yielding acquiescent unassertive self - critical reserved cringing retiring self - doubting cowering See More 4 as in proud having too high an opinion of oneself oh, you're so important —you think the world revolves around you Synonyms & Similar Words proud smug arrogant vain confident consequential selfish domineering vainglorious assured self - important complacent biggety conceited egotistic egoistic prideful bigheaded pompous swellheaded self - satisfied masterful stuck - up superior fastuous self - conceited overweening snobbish cavalier bombastic assumptive boastful toplofty high - and - mighty uppity snobby cocky braggy bragging bumptious uppish supercilious disdainful snooty pontifical blusterous pretentious self - opinionated overconfident haughty high - hat swaggering presumptuous presuming huffy blustery self - assertive lofty self - confident high - handed holier - than - thou imperious chesty self - assured peremptory braggart patronizing highfalutin self - affected self - centered condescending self - applauding self - gratulatory lordly self - adulatory self - contented self - asserting self - engrossed self - dramatizing self - glorifying self - congratulatory self - promoting Antonyms & Near Antonyms modest humble diffident egoless timid self - critical uncomplacent meek unassertive unassuming unpretentious self - reproachful down - to - earth self - distrustful self - reproving shrinking self - doubting shy introverted bashful retiring sheepish unarrogant overmodest mousy demure See More Example Sentences 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 . Recent Examples of important Tire tread depth - Checking your tire tread before hitting the road is important , as low or no tread can lead to sliding. — Nc Weather Bot, Charlotte Observer , 30 Apr. 2026 The most important part about his content is its bringing more customers to small businesses that had been struggling to get people through the door. — Kansas City Star , 30 Apr. 2026 The most important thing is Nix’s mobility being close to 100% by mid-August. — Sean Keeler, Denver Post , 30 Apr. 2026 Although tonally very different, like ‘The Long Goodbye’ before it, this felt like an important and urgent film to make. — Alex Ritman, Variety , 30 Apr. 2026 See All Example Sentences for important Recent Examples of Synonyms for important major influential arrogant proud significant powerful superior smug Adjective Jayson Tatum also suffered an apparent calf injury, which is a major concern for a player just under a year removed from an Achilles injury. — Dan Santaromita, New York Times , 1 May 2026 In dozens of markets, including San Diego and Sacramento, Nexstar would own multiple major TV network affiliates. — Meg James, Los Angeles Times , 1 May 2026 Definition of major Adjective Over the past five weeks, Rubio, Sessions and influential GOP lobbyist Brian Ballard testified at the foreign-agent trial. — Miami Herald, Miami Herald , 30 Apr. 2026 The movie took in $248M global and became one of the most successful and influential horror movies ever. — Andreas Wiseman, Deadline , 30 Apr. 2026 Definition of influential Adjective The series has devolved into a hysteria that the young and arrogant Timberwolves feed on since that first quarter of Game 2. — Bennett Durando, Denver Post , 26 Apr. 2026 However, many thought Tilson Thomas too brash and arrogant to lead an orchestra, and, around the same time, Tilson Thomas fell in with New York’s disco-hopping crowd. — Jessica Gelt, Los Angeles Times , 23 Apr. 2026 Definition of arrogant Adjective Warnings, laments, and odes to renewal were expressed pictorially as dying days under bleeding heavens, belching volcanoes, proud icebergs, lavish rainbows amid spangling, mist-suffusing sunlight and dawns of peace and hope. — Sebastian Smee, New Yorker , 4 May 2026 Simulation Academy at Yale is proud to announce the Graduation of approximately 75 students on Saturday, May 2. — Simulation Academy at Yale, Hartford Courant , 4 May 2026 Definition of proud Adjective The week the book was published, WGA members were voting to ratify a new contract that includes a bailout of the union’s ailing health fund and significant increases in health insurance costs. — Gene Maddaus, Variety , 4 May 2026 Trump and his backers lost dozens of lawsuits claiming fraud, and numerous recounts, reviews and audits of the election results turned up no signs of significant wrongdoing or error. — Michael R. Sisak, Los Angeles Times , 4 May 2026 Definition of significant Adjective In its system card for Claude Mythos, for instance, Anthropicresearchers noted that the powerful AI exhibited a strange fondness for the British cultural theorist Mark Fisher. — Frank Landymore, Futurism , 30 Apr. 2026 To fix that, Fever removed it and replaced it with a motor from a powerful electric dirt bike. — Mack DeGeurin, Popular Science , 30 Apr. 2026 Definition of powerful Adjective Besides their obvious beauty, wicker baskets are superior for storage (especially laundry), providing excellent ventilation that prevents mold and mildew from damaging your linens. — Ashley Poskin, Martha Stewart , 2 May 2026 Smyth’s nightly tasting menu of superior New Wisconsin cuisine highlights local and seasonal ingredients. — Condé Nast, Condé Nast Traveler , 2 May 2026 Definition of superior Adjective The test case—picturing a cow doing ballet—produces a smug bovine pirouetting. — Elise Broach, New Yorker , 20 Apr. 2026 My math teachers of old are very smug somewhere. — Jennifer Maas, Variety , 17 Apr. 2026 Definition of smug Browse Nearby Words importance important imported See all Nearby Words Articles Related to important We Know You're Concerned about... But more importantly, we're here to help Cite this Entry Style MLA Chicago APA Merriam-Webster “Important.” Merriam-Webster.com Thesaurus , Merriam-Webster, https://www.merriam-webster.com/thesaurus/important. Accessed 5 May. 2026. Copy Citation More from Merriam-Webster on important Nglish: Translation of important for Spanish Speakers Last Updated: 5 May 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced