1.  impact(n = noun.event) - the striking of one body against another;
is a kind of contact, impinging, striking
has particulars: blow, bump, slam

2.  impact(n = noun.phenomenon) wallop - a forceful consequence; a strong effect; "the book had an important impact on my thinking"; "the book packs a wallop"
is a kind of consequence, effect, event, issue, outcome, result, upshot
Derived form verb impact₂

3.  impact(n = noun.act) encroachment, impingement - influencing strongly; "they resented the impingement of American values on European culture"
is a kind of influence
Derived form verb impact₂

4.  impact(n = noun.act) shock - the violent interaction of individuals or groups entering into combat; "the armies met in the shock of battle"
is a kind of combat, fight, fighting, scrap

1.  impact(v = verb.contact) - press or wedge together; pack together;
is one way to force, squeeze, wedge
Derived form noun impaction₁
Sample sentences: Somebody ----s something; Somebody ----s something PP

2.  impact(v = verb.change) affect, bear on, bear upon, touch, touch on - have an effect upon; "Will the new rules affect me?"
is one way to alter, change, modify
Derived forms noun impact₃, noun impact₂
Sample sentences: Somebody ----s something; Somebody ----s somebody; Something ----s somebody; Something ----s something

1.  To drive close; to press firmly together: to wedge into a place. Woodward. [1913 Webster]

2.  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]

3.  To collide forcefully with; to strike. [PJC]

1.  Contact or impression by touch; collision; forcible contact; force communicated. [1913 Webster]
"The quarrel, by that impact driven." [1913 Webster]

2.  The single instantaneous stroke of a body in motion against another either in motion or at rest. [1913 Webster]

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

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.

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.

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.

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