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4 definitions found
 for erratic
From The Collaborative International Dictionary of English v.0.48 :

  Erratic \Er*rat"ic\, a. [L. erraticus, fr. errare to wander: cf.
     F. erratique. See Err.]
     1. Having no certain course; roving about without a fixed
        destination; wandering; moving; -- hence, applied to the
        planets as distinguished from the fixed stars.
        [1913 Webster]
              The earth and each erratic world.     --Blackmore.
        [1913 Webster]
     2. Deviating from a wise of the common course in opinion or
        conduct; eccentric; strange; queer; as, erratic conduct.
        [1913 Webster]
     3. Irregular; changeable. "Erratic fever." --Harvey.
        [1913 Webster]
     Erratic blocks, gravel, etc. (Geol.), masses of stone
        which have been transported from their original resting
        places by the agency of water, ice, or other causes.
     Erratic phenomena, the phenomena which relate to
        transported materials on the earth's surface.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Erratic \Er*rat"ic\, n.
     1. One who deviates from common and accepted opinions; one
        who is eccentric or preserve in his intellectual
        [1913 Webster]
     2. A rogue. [Obs.] --Cockeram.
        [1913 Webster]
     3. (Geol.) Any stone or material that has been borne away
        from its original site by natural agencies; esp., a large
        block or fragment of rock; a bowlder.
        [1913 Webster]
     Note: In the plural the term is applied especially to the
           loose gravel and stones on the earth's surface,
           including what is called drift.
           [1913 Webster]

From WordNet (r) 3.0 (2006) :

      adj 1: liable to sudden unpredictable change; "erratic
             behavior"; "fickle weather"; "mercurial twists of
             temperament"; "a quicksilver character, cool and willful
             at one moment, utterly fragile the next" [syn: erratic,
             fickle, mercurial, quicksilver(a)]
      2: having no fixed course; "an erratic comet"; "his life
         followed a wandering course"; "a planetary vagabond" [syn:
         erratic, planetary, wandering]
      3: likely to perform unpredictably; "erratic winds are the bane
         of a sailor"; "a temperamental motor; sometimes it would
         start and sometimes it wouldn't"; "that beautiful but
         temperamental instrument the flute"- Osbert Lancaster [syn:
         erratic, temperamental]

From Moby Thesaurus II by Grady Ward, 1.0 :

  271 Moby Thesaurus words for "erratic":
     aberrant, aberrative, abnormal, adrift, afloat, agnostic, aimless,
     alternating, ambiguous, amorphous, anomalistic, anomalous, bizarre,
     broken, capricious, careening, casual, catchy, chancy, changeable,
     changeful, changing, character, choppy, circuitous, crackpot,
     crank, crankish, cranky, crotchety, curving, departing, desultory,
     deviable, deviant, deviating, deviative, deviatory, devious, dicey,
     different, digressive, directionless, disarticulated, disconnected,
     discontinuous, discursive, disjunct, disordered, disorderly,
     dispersed, disproportionate, divagatory, divaricate, divergent,
     diversified, diversiform, dizzy, dotty, doubtful, doubting,
     dubious, eccentric, equivocal, erose, errant, exceptional,
     excursive, extraordinary, fast and loose, fey, fickle, fitful,
     flake, flaky, flickering, flighty, flitting, fluctuant,
     fluctuating, formless, freak, freakish, frivolous, funny, giddy,
     gratuitous, guttering, halting, haphazard, herky-jerky, hesitant,
     hesitating, heteroclite, heteromorphic, hit-or-miss, idiocratic,
     idiosyncratic, iffy, immethodical, impetuous, impulsive,
     incalculable, inchoate, incoherent, inconsistent, inconstant,
     indecisive, indemonstrable, indirect, indiscriminate, infirm,
     intermittent, intermitting, irregular, irresolute, irresponsible,
     jagged, jerky, kinky, kook, kooky, labyrinthine, lurching, maggoty,
     mazy, meandering, meaningless, mercurial, misshapen, moody, motley,
     mutable, nonconformist, nonstandard, nonsymmetrical, nonsystematic,
     nonuniform, nut, nutty, odd, oddball, orderless, out-of-the-way,
     outlandish, patchy, peculiar, planetary, planless, pluralistic,
     polysemous, promiscuous, quaint, queer, quirky, ragged, rambling,
     random, recluse, restless, rough, roundabout, roving,
     scatterbrained, scrappy, screwball, screwy, senseless, serpentine,
     shapeless, shifting, shifty, shuffling, singular, skeptical, snaky,
     snatchy, spasmatic, spasmic, spasmodic, spastic, spineless,
     sporadic, spotty, staggering, straggling, straggly, strange,
     strange duck, stray, straying, subnormal, swerving, systemless,
     touch-and-go, turning, twisted, twisting, unaccountable,
     unarranged, uncertain, unclassified, unconfirmable, uncontrolled,
     unconventional, unconvinced, undependable, undirected,
     undisciplined, undivinable, unequable, unequal, uneven, unfixed,
     unforeseeable, ungraded, unjoined, unmethodical, unmetrical,
     unnatural, unordered, unorganized, unorthodox, unpersuaded,
     unpredictable, unprovable, unregular, unreliable, unrestrained,
     unrhythmical, unsettled, unsorted, unstable, unstable as water,
     unstaid, unsteadfast, unsteady, unsure, unsymmetrical,
     unsystematic, ununiform, unusual, unverifiable, vacillating,
     vagarious, vagrant, vague, variable, variegated, variform, various,
     varying, veering, vicissitudinary, vicissitudinous, volatile,
     wacky, wandering, wanton, wavering, wavery, wavy, wayward, weird,
     weirdo, whimsical, winding, wishy-washy, wobbling, wobbly,

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