インパクトの定義と意味 - メリアム・ウェブスター

IMPACT Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition noun verb noun 2 noun verb Did you know? Synonyms Synonym Chooser Example Sentences Word History Phrases Containing Rhymes Entries Near Related Articles Cite this Entry Citation Kids Definition Kids More from M-W Show more Show more Citation Kids More from M-W Save Word To save this word, you'll need to log in. Log In impact 1 of 2 noun im·​pact ˈim-ˌpakt plural impacts Synonyms of impact 1 a : the act or force especially of one body striking another An enormous hole had been made by the impact of the projectile, and the sand and gravel had been flung violently in every direction … — H. G. Wells b : a forceful contact or onset The bomb exploded on/upon impact (with the ground). also : the impetus communicated in or as if in such a contact felt the impact of the blow 2 : the strong influence of one thing on another : a significant or major effect The book had a huge impact when it first came out. She expects to make an immediate impact at work. a study outlining the potential environmental impacts of the construction project — often used with on the impact of science on our society impact 2 of 2 verb im·​pact im-ˈpakt impacted ; impacting ; impacts transitive verb 1 a : to have a direct effect or impact on : impinge on Both events negatively impacted her life. Price increases impact struggling families most. b : to strike forcefully A crater was formed where the meteor impacted the planet's surface. also : to cause to strike forcefully 2 a : to fix firmly by or as if by packing or wedging b : to press together intransitive verb 1 : to have an impact — often used with on or upon The poor economy is impacting on/upon small businesses. 2 : to impinge or make contact especially forcefully The meteor impacted on a distant moon. Usage of Impact Although the verb impact is approximately 200 years older than the noun, some object to it, especially when it is used to mean "to directly affect," as in "changes that will impact us all." This use dates to the first half of the 20th century, making it significantly newer than others. You may wish to avoid it for this reason, or not. Did you know? Is impact a verb? You may occasionally run into claims that impact is not a verb, or that it is somehow ill-suited to a role in this part of speech. Not only is that not the case, but the verb form of impact is much older than the noun form. It is possible that the word started attracting more displeasure when it began being widely used in a figurative sense as a transitive verb ("we expect the recession to impact the company"). The word is certainly a verb, although before using it in this manner in writing it is worth considering your audience, and whether members of it are likely to consider this use problematic. Synonyms of impact Relevance Noun effect influence Verb influence affect impress See All Synonyms & Antonyms in Thesaurus Choose the Right Synonym for impact impact , collision , shock , concussion mean a forceful, even violent contact between two or more things. impact may be used to imply contact between two things, at least one of which is impelled toward the other. the glass shattered on impact with the floor collision implies the coming together of two or more things with such force that both or all are damaged or their progress is severely impeded. the collision damaged the vehicle shock often denotes the effect produced by a collision and carries the suggestion of something that strikes or hits with force. the shock of falling rocks concussion when not in technical use, often suggests the shattering, disrupting, or weakening effects of a collision, explosion, or blow. bystanders felt the concussion of the blast Examples of impact in a Sentence Noun No one could have survived such an impact . These warnings have been heard so often that they have lost their impact . The book had a huge impact when it first came out. We need to be concerned about the environmental impacts of all this construction. She expects to make an immediate impact at work. Verb No one is sure how these changes will impact our relations with other countries. Both events negatively impacted her life. The tax increase will impact low-income families the most. The poor economy is impacting on small businesses. A crater was formed at the point where the meteor impacted the planet's surface. See More 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 But understanding the caution doesn’t lessen the impact of his absence. — Mike Bianchi, The Orlando Sentinel , 30 Apr. 2026 During a sentencing hearing in Ireland, a victim- impact statement is sometimes delivered in court. — Ed Caesar, New Yorker , 30 Apr. 2026 Verb Even in just the first month of the season, this new practice has heavily impacted the sport. — Ian Miller Outkick, FOXNews.com , 29 Apr. 2026 That freeze has impacted nearly one million Cubans, according to a separate Cato analysis. — Syra Ortiz Blanes, Miami Herald , 28 Apr. 2026 See All Example Sentences for impact Word History Etymology Verb Latin impactus , past participle of impingere to push against — more at impinge First Known Use Noun 1781, in the meaning defined at sense 1a Verb 1601, in the meaning defined at transitive sense 2a Time Traveler The first known use of impact was in 1601 See more words from the same year Phrases Containing impact disparate impact high - impact impact printer low - impact non - impact printer Rhymes for impact abstract attacked attract contact contract detract distract enact exact extract hijacked intact See All Rhymes for impact Browse Nearby Words imp impact impact bomb See all Nearby Words Articles Related to impact Merriam-Webster’s Great Big List of... All your favorite pet peeves Funner, Stupider, and Other Words That... Don't argue with the dictionary Yes, 'Impact' Is a Verb The verb got there first Cite this Entry Style MLA Chicago APA Merriam-Webster “Impact.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/impact. Accessed 6 May. 2026. Copy Citation Kids Definition impact 1 of 2 verb im·​pact im-ˈpakt 1 : to have a strong effect on volcanic ash impacted weather conditions worldwide 2 : to hit or cause to hit with force impact 2 of 2 noun im·​pact ˈim-ˌpakt 1 : a striking together of two bodies : collision 2 : a forceful effect the impact of pollution on the environment More from Merriam-Webster on impact Nglish: Translation of impact for Spanish Speakers Britannica.com: Encyclopedia article about impact Last Updated: 30 Apr 2026 - Updated example sentences Love words? Need even more definitions? 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