Impact

• POS: Noun, Verb (usu participle)
• HYPHEN: im=pact

CIDE DICTIONARY

Impact, v. t. [L. impactus, p. p. of impingere to push, strike against. See Impinge.].

•  To drive close; to press firmly together: to wedge into a place.  Woodward.  [1913 Webster]
•  To affect or influence, especially in a significant or undesirable manner; as, budget cuts impacted the entire research program; the fish populations were adversely impacted by pollution.  [PJC]
•  To collide forcefully with; to strike.  [PJC]

Impact, n. 

•  Contact or impression by touch; collision; forcible contact; force communicated.  [1913 Webster]

  "The quarrel, by that impact driven."  [1913 Webster]
•  The single instantaneous stroke of a body in motion against another either in motion or at rest.  [1913 Webster]

OXFORD DICTIONARY

Impact, n. & v.
--n.
1 (often foll. by on, against) the action of one body coming forcibly into contact with another.
2 an effect or influence, esp. when strong.
--v.tr.
1 (often foll. by in, into) press or fix firmly.
2 (as impacted adj.) a (of a tooth) wedged between another tooth and the jaw. b (of a fractured bone) with the parts crushed together. c (of faeces) lodged in the intestine.

Derivative

impaction n.

Etymology

L impact- part. stem of impingere IMPINGE

THESAURUS

Impact

affect, affective meaning, altitude peak, appulse, automatic control, backlash, backwash, bearing, bed, blast-off, blow, bounce, brunt, buffet, bulldozing, bulling, bump, bumping, burden, burn, burnout, cannon, carambole, carom, ceiling, change, clash, clout, colliding, collision, coloring, concussion, confirm, connotation, consequence, consequences, contact, crack-up, cram in, crash, crashing, crowd in, crump, crunch, deep-dye, define, denotation, descent, drift, drive in, effect, embed, encounter, end of burning, engraft, engrave, entrench, essence, establish, etch, extension, fix, flight, force, force in, found, gist, grammatical meaning, ground, hammering, hit, idea, ignition, impingement, implant, implication, import, impress, impression, imprint, infix, influence, ingrain, inscribe, intension, jam, jam in, jar, jolt, jounce, knock in, launch, lexical meaning, lift-off, literal meaning, lodge, mark, mauling, meaning, meeting, modify, onslaught, overtone, pack, pack in, percussion, pertinence, pith, plant, plunge in, point, poke in, pound, pound in, practical consequence, press in, print, punch, purport, push in, quake, quiver, ram in, ramming, range of meaning, rap, reaction, real meaning, recoil, reference, referent, reflex, relation, relevance, repercussion, response, results, rock, rocket launching, root, run in, scope, seat, semantic cluster, semantic field, sense, set, set in, settle, shake, shock, shoot, shot, sideswipe, significance, signification, significatum, signifie, slap, sledgehammering, smash, smash-up, smashing, span of meaning, spirit, squeeze in, stamp, stereotype, strike, striking, stroke, structural meaning, stuff in, substance, sum, sum and substance, symbolic meaning, tamp in, tenor, thrust, thrust in, thrusting, totality of associations, trajectory, transferred meaning, tremble, tremor, unadorned meaning, undertone, value, velocity peak, wallop, wedge, wedge in, weight, whomp

ROGET THESAURUS

Impact

Junction

VB join, unite, conjoin, connect, associate, put together, lay together, clap together, hang together, lump together, hold together, piece together, tack together, fix together, bind up together together, embody, reembody, roll into one, attach, fix, affix, saddle on, fasten, bind, secure, clinch, twist, make fast, tie, pinion, string, strap, sew, lace, tat, stitch, tack, knit, button, buckle, hitch, lash, truss, bandage, braid, splice, swathe, gird, tether, moor, picket, harness, chain, fetter, lock, latch, belay, brace, hook, grapple, leash, couple, accouple, link, yoke, bracket, marry, bridge over, span, braze, pin, nail, bolt, hasp, clasp, clamp, crimp, screw, rivet, impact, solder, set, weld together, fuse together, wedge, rabbet, mortise, miter, jam, dovetail, enchase, graft, ingraft, inosculate, entwine, intwine, interlink, interlace, intertwine, intertwist, interweave, entangle, twine round, belay, tighten, trice up, screw up, be joined, hang together, hold together, cohere.

Impulse

N impulse, sudden thought, impromptu, improvisation, inspiration, flash, spurt, improvisatore, creature of impulse, extemporaneous, impulsive, indeliberate, snap, improvised, improvisate, improvisatory, unpremeditated, unmeditated, improvise, unprompted, unguided, natural, unguarded, spontaneous, instinctive, extempore, extemporaneously, offhand, impromptu, a limproviste, improviso, on the spur of the moment, on the spur of the occasion, impulse, impulsion, impetus, momentum, push, pulsion, thrust, shove, jog, jolt, brunt, booming, boost, throw, explosion, propulsion, percussion, concussion, collision, occursion, clash, encounter, cannon, carambole, appulse, shock, crash, bump, impact, elan, charge, beating, blow, dint, stroke, knock, tap, rap, slap, smack, pat, dab, fillip, slam, bang, hit, whack, thwack, cuff, squash, dowse, swap, whap, punch, thump, pelt, kick, punce, calcitration, ruade, arietation, cut, thrust, lunge, yerk, carom, carrom, clip, jab, plug, sidewinder, sidewipe, sideswipe, hammer, sledge hammer, mall, maul, mallet, flail, ram, rammer, battering ram, monkey, pile-driving engine, punch, bat, cant hook, cudgel, ax, dynamics, seismometer, accelerometer, earthquake detector, impelling, impulsive, impellent, booming, dynamic, dynamical, impelled, a hit, a very palpable hit.

Insertion

VB insert, introduce, intromit, put into, run into, import, inject, interject, infuse, instill, inoculate, impregnate, imbue, imbrue, graft, ingraft, bud, plant, implant, dovetail, obtrude, thrust in, stick in, ram in, stuff in, tuck in, press, in, drive in, pop in, whip in, drop in, put in, impact, empierce, imbed, immerse, immerge, merge, bathe, soak, dip, plunge, bury, insert itself, lodge itself, plunge in medias res.