Bump

Noun

 * 1) A light blow or jolting collision.
 * 2) The sound of such a collision.
 * 3) A protuberance on a level surface.
 * 4) A swelling on the skin caused by illness or injury.
 * 5) (rowing) The point, in a race in which boats are spaced apart at the start, at which a boat begins to overtake the boat ahead.
 * 6) The swollen abdomen of a pregnant woman.
 * 7)  A post in an Internet forum thread made in order to raise the thread's profile by returning it to the top of the list of active threads.
 * 8) A temporary increase in a quantity, as shown in a graph.
 * 9)  A dose of the drug ketamine, when taken recreationally.

Verb

 * 1) To knock against or run into with a jolt.
 * 2)  To post in an Internet forum thread in order to raise the thread's profile by returning it to the top of the list of active threads.
 * 3)  To suddenly boil, causing movement of the vessel and loss of liquid.
 * 4)  To move (a booked passenger) to a later flight because of earlier delays or cancellations.

Adjectives for Bump
dull; heavy; inadvertent.

Derived terms

 * bump and grind
 * bump into
 * bump off
 * bump up
 * bump and grind
 * speed bump
 * things that go bump in the night

Thesaurus
degrading, dement, demote, demotion, dent, deplume, depluming, depose, deprive, destroy, didder, dig, dilatation, dilation, dint, disbar, discharge, disemploy, disgrade, disgrading, dismiss, dispatch, displace, displume, displuming, distension, dither, do away with, do in, dowel, dower, downgrade, downgrading, dowry, drive, drum out, dull thud, ear, edema, elbow, eliminate, embossment, empty space, encounter, endowment, equipment, excrescence, execute, expel, faculty, fall foul of, falter, favorable wind, fingerprint, fire, flair, flange, flap, flick, flop, flump, fog, footmark, footprint, footstep, force, forte, fossil footprint, foul, front, furlough, furuncle, gall, genius, gift, give the ax, give the gate, gnarl, goad, grimace, hammering, handle, have an ague, head, head wind, high-pressure area, hill, hit, hit against, hole, humble, humbling, hump, hunch, hurt, hurtle, hustle, ice, ichnite, ichnolite, impact, impinge, impingement, impress, impression, imprint, indent, indentation, indention, instinct, intumescence, ionosphere, jab, jactitate, jam, jar, jerk, jetstream, jig, jigget, jiggle, jog, joggle, jolt, jostle, jounce, jump, kick, kick upstairs, kill, knack, knob, knock, knock against, knot, knur, knurl, lay off, let go, let out, light, lip, liquidate, long suit, loop, low-pressure area, lower, luck, lump, make redundant, makings, mauling, meet, meeting, metier, mole, mountain, mudhole, murder, natural endowment, natural gift, nevus, nub, nubbin, nubble, nudge, onslaught, overcast, pad, papilloma, parts, pat, patter, paw print, pawmark, peg, pension off, percuss, percussion, pile drive, pimple, pitapat, pitter-patter, plump, plunk, pock, pocket, poke, pop, potential, pothole, power, powers, press, pressure, print, prod, protuberance, pug, pugmark, punch, push, pustule, put away, quake, qualification, quaver, quiver, ram, ram down, ramming, rap, rattle, read out of, reduce, reduction, release, remove, replace, report, retire, rib, rictus, ridge, ring, rising, roughness, rub out, run, run across, run against, run into, rut, sack, seal, sebaceous cyst, separate forcibly, shake, shiver, shock, shoulder, shove, shudder, sideswipe, sigil, signet, slam, slam into, slap, slat, sledgehammering, smack, smack into, smash, smash into, smash up, smash-up, smashing, soup, space, speciality, spine, splat, stamp, step, stratosphere, stress, strike, strike against, strip, strip of rank, stripping of rank, strong flair, strong point, stud, stumble, style, substratosphere, superannuate, surplus, suspend, swap, swell, swelling, swollenness, tab, tail wind, talent, talents, tamp, tap, the goods, the stuff, thrust, thrusting, thud, thumbmark, thumbprint, thump, thwack, tic, tick, tinkle, tremble, tremor, tropopause, troposphere, trough, tubercle, tubercule, tumble, tumefaction, tumescence, tumidity, tumor, tunk, turbulence, turgescence, turgescency, turgidity, turn, turn off, turn out, twitch, twitter, unfrock, verruca, vesicle, vestige, vibrate, visibility, visibility zero, wale, wallop, wart, waste, welt, wen, whack, wham, whap, what it takes, whomp, whop, wipe out, wobble, abase, abasement, ability, aerospace, aerosphere, air hole, air pocket, airspace, appulse, aptness, assassinate, assault, bang, bang into, bear, bear upon, bearing, bent, bilge, blain, bleb, blister, blob, blow, bob, bobble, boil, boost, boot, boss, bounce, bow, break, brunt, bubble, buck, buffet, bulb, bulge, bull, bulla, bulldoze, bulldozing, bulling, bump against, bump into, bump off, bunch, bunion, bunt, burl, burst, bust, butt, butt against, button, cahot, caliber, can, cannon, capability, capacity, carambole, carbuncle, carom, carom into, cashier, casting down, ceiling, chance, chatter, chine, chink, chuckhole, clap, clash, click, clink, clop, clump, clunk, collide, collision, colophon, come across, come into collision, concavity, concuss, concussion, condyle, confront each other, convex, convexity, corn, crack, crack up, crack-up, cram, crash, crash into, crosswind, crowd, crump, crunch, cyst, dactylogram, dactylograph, dash into, debase, debasement, defrock, degradation, degrade,

Etymology
From Early Modern English bump:, probably of origin. Compare bump:,  bumpe:, Old  bumpe:. Apparently related to bumben:, bummen:,  bommen:,  bummen:,  bumba:, probably of imitative origin. More at,. Compare also.