Perturbation

Noun

 * 1)  Agitation; the state of being perturbed
 * 2)  A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
 * 3)  Variation in an orbit due to the influence of external bodies

Adjectives for Perturbation
irritable; curious; mental; observed; habitual; internal; planetary; mutual; past; lunar; evident.

Verbs for Perturbation
bear—; cool—; endure—; experience—; ferment—; inflict—; provoke—; shake with —; smart under—; wince in—; writhe in —; —chafes; —chokes; —enrages; —infects; —inflames; —jolts; —shakes.

Thesaurus
ado, aggravation, agitation, all-overs, angst, animation, anxiety, anxiety hysteria, anxiety neurosis, anxious bench, anxious concern, anxious seat, anxiousness, apprehension, apprehensiveness, arousal, arousing, baffle, bafflement, befuddlement, bewilderment, bluster, bobbery, boil, boiling, bother, botheration, brouhaha, bustle, cankerworm of care, care, chaos, chills of fear, churn, cloud, cold creeps, cold shivers, cold sweat, commotion, concern, concernment, confoundment, confusion, conturbation, convulsion, creeps, daze, derangement, dilemma, disarrangement, disarray, disarticulation, discombobulation, discomfiture, discomposure, disconcert, disconcertedness, disconcertion, disconcertment, disharmony, dishevelment, disintegration, disjunction, dislocation, disorder, disorderliness, disorganization, disorientation, disproportion, disquiet, disquietude, disruption, distress, disturbance, dread, ebullience, ebullition, eddy, effervescence, electrification, embarrassment, embroilment, enigma, entropy, exacerbation, exasperation, excitation, excitement, exhilaration, fear, fear and trembling, feery-fary, ferment, fermentation, fever, feverishness, fidgets, fix, flap, flummox, flurry, fluster, flutter, flutteration, fog, foment, fomentation, foreboding, forebodingness, frenzy, fuddle, fuddlement, fume, fuss, galvanization, goose bumps, gooseflesh, haphazardness, haze, heartquake, horripilation, hubbub, hurly-burly, hurry, hurry-scurry, incitement, incoherence, indiscriminateness, inflammation, infuriation, inharmonious harmony, inquietude, insanity, irregularity, irritation, jam, jimjams, jitters, jumble, jumpiness, lathering up, maelstrom, malaise, maze, mess, misarrangement, misgiving, mist, moil, most admired disorder, muddle, muddlement, mystery, nerviness, nervous tension, nervousness, nonplus, nonsymmetry, nonuniformity, overanxiety, palpitation, pell-mell, perplexity, pickle, pins and needles, plight, pother, predicament, problem, promiscuity, promiscuousness, provocation, pucker, puzzle, puzzlement, quaking, quandary, quiver of terror, randomness, restlessness, riddle, roil, rout, row, ruffle, scrape, seethe, seething, shivers, shuffle, shuffling, solicitude, steaming up, stew, stimulation, stimulus, stir, stirring, stirring up, strain, suspense, sweat, swirl, swirling, swivet, tension, thrill of fear, tizzy, to-do, trepidation, trepidity, trouble, tumult, tumultuation, turbidity, turbulence, turmoil, twitter, unassuredness, unease, uneasiness, unquietness, unrest, unsettlement, unsymmetry, ununiformity, uproar, upset, vexation, vortex, whipping up, whirl, working up, yeastiness, zeal

Etymology
perturb + -ation

Translations

 * Italian:


 * Esperanto:
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 * Ido:
 * Italian:


 * Italian:


 * Japanese: 摂動

Noun

 * 1) disturbance
 * 2) derangement

Etymology
From perturbatio.