Erratic

مترادف و متضاد erratic

1. adjective unpredictable; wandering
   Synonyms: aberrant, abnormal, anomalous, arbitrary, bizarre, capricious, changeable, desultory, devious, dicey, directionless, dubious, eccentric, fitful, flaky, fluctuant, idiosyncratic, iffy, incalculable, inconsistent, inconstant, irregular, meandering, mercurial, nomadic, oddball, peculiar, planetary, rambling, roving, shifting, spasmodic, strange, stray, uncertain, undirected, unnatural, unreliable, unstable, unusual, vagarious, variable, volatile, wayward, weird, whimsical
   Antonyms: certain, consistent, definite, dependable, predictable, regular, reliable, steady, sure, unchanging