adj.飘忽不定的，没规律的；adj.古怪的
Merriam-Webster Online Dictionary
erratic (adjective)1.
a) having no fixed course - wandering an erratic comet
b) archaic - nomadic
2.
transported from an original resting place especially by a - glacier an erratic boulder
3.
a) characterized by lack of consistency, regularity, or uniformity - erratic dieting keeps erratic hours
b) from what is ordinary or standard - deviating eccentric an erratic genius strange
one that is erratic - (see erratic) , especially a boulder or block of rock transported from its original resting place especially by a glacier
Merriam-Webster Online Thesaurus
erratic (adjective)1.
lacking a definite plan, purpose, or pattern
SYNONYMS:
aimless, arbitrary, catch-as-catch-can, desultory, erratic, haphazard, helter-skelter, hit-or-miss, scattered, slapdash, strayRELATED WORDS:
accidental, casual, chance, chancy, contingent, fluky ( flukey), fortuitous, inadvertent, incidental, lucky, unconsidered, unintended, unintentional, unplanned, unpremeditated; scattershot, shotgun; irregular, odd, sporadic, spot; directionless, objectless, purposeless; indiscriminate, unsystematic; undirected; disorderly, disorganized; undiscriminating, unselectiveNEAR ANTONYMS:
established, fixed, regular, set, stable, steady; constant, continuous, even; arranged, managed, orchestrated, ordered, planned; aware, conscious, deliberate, purposeful, thoughtful, willful ( wilful)2.
lacking in steadiness or regularity of occurrence
SYNONYMS:
aperiodic, casual, catchy, choppy, discontinuous, episodic ( episodical), erratic, intermittent, irregular, occasional, spasmodic, spastic, sporadic, spotty, unsteadyRELATED WORDS:
convulsive, sudden, violent; broken, disconnected, fragmentary, interrupted; aimless, arbitrary, desultory, haphazard, hit-and-miss, hit-or-miss, odd, random, scattered, slapdash, stray; capricious, changeful, changing, flickery, fluctuating, fluid, inconstant, mercurial, mutable, temperamental, uncertain, unpredictable, unsettled, unstable, varying, wavering; changeable, fickle, variable, volatileNEAR ANTONYMS:
changeless, equable, even, stable, stationary, uniform; unchanging, unvarying, unwavering; methodical ( methodic), orderly, systematic; unrelenting, unremitting3.
not staying constant
SYNONYMS:
changing, erratic, fluctuating, irregular, unequal, unstable, unsteady, varyingRELATED WORDS:
capricious, changeable, changeful, choppy, fickle, fluid, inconsistent, inconstant, mercurial, mutable, uncertain, unsettled, variable, volatileNEAR ANTONYMS:
regular4.
different from the ordinary in a way that causes curiosity or suspicion
SYNONYMS:
bizarre, bizarro, cranky, crazy, curious, eccentric, erratic, far-out, funky, funny, kinky, kooky ( kookie), offbeat, off-kilter, off-the-wall, outlandish, out-of-the-way, outré, peculiar, quaint, queer, queerish, quirky, remarkable, rum, screwy, spaced-out, strange, wacky ( whacky), way-out, weird, weirdo, wildRELATED WORDS:
aberrant, abnormal, addlepated, flaky; extraordinary, fantastic ( fantastical), freak, freakish, freaky, phantasmagoric ( phantasmagorical), phenomenal; atypical, rare, singular, uncommon, uncustomary, unique, unusual, unwonted; conspicuous, notable, noticeable, outstanding, prominent, salient, striking; atrocious, outrageous, shocking; crotchety, idiosyncratic, nonconformist, nonmainstream, out-there, unconventional, unorthodox; baffling, bewildering, confounding, mystifying, perplexing, puzzlingNEAR ANTONYMS:
average, commonplace, everyday, garden, normal, ordinary, prosaic, routine, run-of-the-mill, standard, typical, unexceptional, unremarkable, usual, workaday; conformist, conservative, conventional; expected, familiar, knee-jerk, predictable; common, customary, frequent, habitual, regular, wonted