An unhappy and worried mental state.

synonyms: disturbance, upset.

Roget 315: agitation, stir, tremor, shake, ripple, jog, jolt, jar, jerk, shock, succussion^†, trepidation, quiver, quaver, dance; jactitation^†, quassation^†; shuffling etc. v.; twitter, flicker, flutter.    turbulence, perturbation; commotion, turmoil, disquiet; tumult, tumultuation^†; hubbub, rout, bustle, fuss, racket, subsultus^†, staggers, megrims, epilepsy, fits; carphology^†, chorea, floccillation^†, the jerks, St.    Vitus's dance, tilmus^†.    spasm, throe, throb, palpitation, convulsion.    disturbance, chaos etc. (disorder) 59; restlessness etc. (changeableness) 149.    ferment, fermentation; ebullition, effervescence, hurly-burly, cahotage^†; tempest, storm, ground swell, heavy sea, whirlpool, vortex etc. 312; whirlwind etc. (wind) 349.    ... show more

Roget 860: fear, timidity, diffidence, want of confidence; apprehensiveness, fearfulness etc. adj.; solicitude, anxiety, care, apprehension, misgiving; feeze [U.S.]; mistrust etc. (doubt) 485; suspicion, qualm; hesitation etc. (irresolution) 605.    nervousness, restlessness etc. adj.; inquietude, disquietude, worry, concern; batophobia^†; heartquake^†; flutter, trepidation, fear and trembling, perturbation, tremor, quivering, shaking, trembling, throbbing heart, palpitation, ague fit, cold sweat; abject fear etc. (cowardice) 862; mortal funk, heartsinking^†, despondency; despair etc. 859.    fright; affright, affrightment^†; boof alarm [U.S.], dread, awe, terror, horror, dismay, consternation, panic, scare, stampede (of horses). intimidation, terrorism, reign of terror.    [Object of fear] bug bear, bugaboo; scarecrow; hobgoblin etc. (demon) 980; nightmare, Gorgon, mormo^†, ogre, Hurlothrumbo^†, raw head and bloody bones, fee-faw-fum, bete noire [Fr.], enfant terrible [Fr.].    alarmist etc. (coward) 862.    ... show more

Roget 171: energy, physical energy, force, power etc. 157; keenness etc. adj.; intensity, vigor, strength, elasticity; go; high pressure; fire; rush.    acrimony, acritude^†; causiticity^†, virulence; poignancy; harshness etc. adj.; severity, edge, point; pungency etc. 392.    cantharides; seasoning etc. (condiment) 393.    activity, agitation, effervescence; ferment, fermentation; ebullition, splutter, perturbation, stir, bustle; voluntary energy etc. 682; quicksilver.    resolution etc. (mental energy) 604; exertion etc. (effort) 686; excitation etc. (mental) 824.    ... show more

Roget 61: derangement etc. v.; disorder etc. 59; evection^†, discomposure, disturbance; disorganization, deorganization^†; dislocation; perturbation, interruption; shuffling etc. v.; inversion etc. 218; corrugation etc. (fold) 258; involvement.    interchange etc. 148.    ... show more

Roget 824: excitation of feeling; mental excitement; suscitation^†, galvanism, stimulation, piquance, piquancy, provocation, inspiration, calling forth, infection; animation, agitation, perturbation; subjugation, fascination, intoxication; enravishment^†; entrancement; pressure, tension, high pressure.    unction, impressiveness etc. adj.. trail of temper, casus belli [Lat.]; irritation etc. (anger) 900; passion etc. (state of excitability) 825; thrill etc. (feeling) 821; repression of feeling etc. 826; sensationalism, yellow journalism.    ... show more

physics A secondary influence on a system that causes it to deviate slightly.

Activity that is a malfunction, intrusion, or interruption:
— The term `distress' connotes some degree of perturbation and emotional upset.

synonym: disturbance.

A disposition that is confused or nervous and upset.

synonym: fluster.

Roget 825: excitability, impetuosity, vehemence; boisterousness etc. adj.; turbulence; impatience, intolerance, nonendurance^†; irritability etc. (irascibility) 901; itching etc. (desire) 865; wincing; disquiet, disquietude; restlessness; fidgets, fidgetiness; agitation etc. (irregular motion) 315.    trepidation, perturbation, ruffle, hurry, fuss, flurry; fluster, flutter; pother, stew, ferment; whirl; buck fever; hurry-skurry^†, thrill etc. (feeling) 821; state of excitement, fever of excitement; transport.    passion, excitement, flush, heat; fever, heat; fire, flame, fume, blood boiling; tumult; effervescence, ebullition; boiling over; whiff, gust, story, tempest; scene, breaking out, burst, fit, paroxysm, explosion; outbreak, outburst; agony.    violence etc. 173; fierceness etc. adj.; rage, fury, furor, furore^†, desperation, madness, distraction, raving, delirium; phrensy^†, frenzy, hysterics; intoxication; tearing passion, raging passion; anger etc. 900.    fascination, infatuation, fanaticism; Quixotism, Quixotry; tete montee [Fr.].    ... show more

Roget 821: feeling; suffering etc. v.; endurance, tolerance, sufferance, supportance^†, experience, response; sympathy etc. (love) 897; impression, inspiration, affection, sensation, emotion, pathos, deep sense.    warmth, glow, unction, gusto, vehemence; fervor, fervency; heartiness, cordiality; earnestness, eagerness; empressement [Fr.], gush, ardor, zeal, passion, enthusiasm, verve, furore^†, fanaticism; excitation of feeling etc. 824; fullness of the heart etc. (disposition) 820; passion etc. (state of excitability) 825; ecstasy etc. (pleasure) 827.    blush, suffusion, flush; hectic; tingling, thrill, turn, shock; agitation etc. (irregular motion) 315; quiver, heaving, flutter, flurry, fluster, twitter, tremor; throb, throbbing; pulsation, palpitation, panting; trepidation, perturbation; ruffle, hurry of spirits, pother, stew, ferment; state of excitement.    ... show more

Polish: turbacja

The act of causing disorder.

synonym: disruption.

Dutch: ontregeling