impact.
The striking of one body against another; collision.
Meaning & usage
The striking of one body against another; collision.
The force or energy of a collision of two objects.
The hatchet cut the wood on impact.
A forced impinging.
His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.
A significant or strong influence or effect.
His friend's opinion had an impact on his decision.
Our choice of concrete will have a tremendous impact on the building's mechanical performance.
Where this word comes from
Attested since the 17th century, from Latin impāctus.
To collide or strike, the act of impinging.
When the hammer impacts the nail, it bends.
To compress; to compact; to press into something or pack together.
The footprints of birds do not impact the soil in the way those of dinosaurs do.
To significantly or strongly influence or affect; to have an impact on.
I can make the changes, but it will impact the schedule.
To stamp or impress onto something.
Ideas impacted on the mind.
Where this word comes from
Attested since the 17th century, from Latin impāctus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.