1

impact

play
verb im·pact \im-ˈpakt\

Definition of impact

  1. transitive verb
  2. 1 a :  to fix firmly by or as if by packing or wedging b :  to press together

  3. 2 a :  to have a direct effect or impact on :  impinge on b :  to strike forcefully; also :  to cause to strike forcefully

  4. intransitive verb
  5. 1 :  to have an impact —often used with on

  6. 2 :  to impinge or make contact especially forcefully

impactful

play \im-ˈpakt-fəl, ˈim-ˌpakt-fəl\ adjective

impactive

play \im-ˈpak-tiv\ adjective

impactor

less commonly

impacter

play \-tər\ noun

Examples of impact in a sentence

  1. No one is sure how these changes will impact our relations with other countries.

  2. Both events negatively impacted her life.

  3. The tax increase will impact low-income families the most.

  4. The poor economy is impacting on small businesses.

  5. A crater was formed at the point where the meteor impacted the planet's surface.

Origin and Etymology of impact

Latin impactus, past participle of impingere to push against — more at impinge


First Known Use: 1601


2

impact

play
noun im·pact \ˈim-ˌpakt\

Definition of impact

  1. 1 a :  an impinging or striking especially of one body against another b :  a forceful contact or onset; also :  the impetus communicated in or as if in such a contact

  2. 2 :  the force of impression of one thing on another :  a significant or major effect <the impact of science on our society> <an environmental impact study>

Examples of impact in a sentence

  1. No one could have survived such an impact.

  2. These warnings have been heard so often that they have lost their impact.

  3. The book had a huge impact when it first came out.

  4. We need to be concerned about the environmental impacts of all this construction.

  5. She expects to make an immediate impact at work.

1781

First Known Use of impact

1781

Synonym Discussion of 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>.


IMPACT Defined for English Language Learners

1

impact

play
verb im·pact \im-ˈpakt\

Definition of impact for English Language Learners

  • : to have a strong and often bad effect on (something or someone)

  • : to hit (something) with great force


2

impact

play
noun im·pact \ˈim-ˌpakt\

Definition of impact for English Language Learners

  • : the act or force of one thing hitting another

  • : a powerful or major influence or effect


IMPACT Defined for Kids

1

impact

play
noun im·pact \ˈim-ˌpakt\

Definition of impact for Students

  1. 1 :  a striking of one body against another :  collision <The meteor's impact left a crater.>

  2. 2 :  a strong effect <He warned of the economic impact.>


2

impact

play
verb im·pact \im-ˈpakt\

Definition of impact for Students

impacted

impacting

  1. 1 :  to have a strong and often bad effect on <This change will impact all schools.>

  2. 2 :  to hit with great force



Seen and Heard

What made you want to look up impact? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to strike by flicking the finger outward

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • hot-dog--hot-dog--hot-dog--hot-dog-cat
  • Which of the following words is not a synonym for ‘a young person’?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ