impact

1 to act upon (a person or a person's feelings) so as to cause a response the tragic loss of his father impacted the boy for the rest of his life Synonyms affect, impress, influence, move, reach, strike, sway, tell (on), touchRelated Words carry away, dazzle, enrapture, entrance, enthrall (or enthral), ravish, transport; bias, color; inspire, stir; engage, interest, involve, penetrate, pierce; afflict, agitate, bother, concern, discomfort, discompose, disquiet, distress, disturb, fluster, harass, harry, perturb, pester, plague, smite, strain, stress, trouble, try, upset, worry, wring; allure, attract, bewitch, captivate, charm, enchant, fascinateNear Antonyms bore, jade, pall, tire, weary; underwhelm

2 to come into usually forceful contact with something the damage sustained when a car going 40 miles an hour impacts with a brick wall Synonyms bang, bash, bump, collide, crash, hit, impinge, knock, ram, slam, smash, strike, swipe, thudRelated Words bounce, carom, clunk, glance, rebound, ricochet, skim, skip; contact, land, touch; brush, graze, kiss, nudge, scrape, shave, sweep; bulldoze, jostle, muscle, press, pushNear Antonyms miss, skirt

3 to set solidly in or as if in surrounding matter the bullet was found impacted in the police officer's protective vest Synonyms bed, embed (also imbed), enroot, fix, entrench, implant, ingrain (also engrain), lodge, rootRelated Words imbue, infuse, instill; beat (into), drive (into); establish, place, put, settle, stickNear Antonyms eliminate, eradicate; eject, expel; detach, disconnect, disengage, removeAntonyms dislodge, root (out), uproot

1 a forceful coming together of two things the glass shattered immediately upon impact with the floor Synonyms bump, collision, concussion, crash, impingement, jar, jolt, jounce, kick, shock, slam, smash, strike, wallop Related Words blow, buffet, hit, knock, punch, rap, slap, thump; bashing, battering, bludgeoning, clobbering, hammering, lambasting, licking, pounding, pummeling (also pummelling), thrashing; contact, encounter, meeting, touch

2 the power to bring about a result on another the execution had such a powerful impact on her that she became a crusader for the abolition of capital punishment Synonyms effect, influence, mark, repercussion, swayRelated Words authority, clout, prestige, pull, weight; command, domination, dominion, mastery; consequence, importance, significance; sovereignty (also sovranty), supremacyNear Antonyms helplessness, impotence, impotency, powerlessness, weakness

3 the quality of an utterance that provokes interest and produces an effect the story has real dramatic impact Synonyms cogency, effectiveness, force, forcefulness, punch, pointRelated Words payoff; importance, significance; appeal, attraction, charm, fascination