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

How To Use erratic In A Sentence

  • Rubbish advice The erratic bin collections over the past few weeks have left me struggling to cope with all our household rubbish. Times, Sunday Times
  • The hanging-wall zone contained 33% of the copper and was the most erratic and discontinuous zone.
  • In my scenario, the Senator tells the drowning person that it was the flailing non-swimmer's fault for falling in and not learning how to swim, not the Senator's doing, just before the erratic splasher goes under the surface for the last time. Norman Cressy: Musings II
  • The road itself twisted and contorted as much as the river as it dodged through and around clusters of trees and boulders: indigenous and erratics.
  • Querulousness, arrogance and an erratic streak alienated even his closest supporters, dooming his place in history.
  • This week light was shed on the possible reasons behind this erratic display. Times, Sunday Times
  • On return home, was remembering my brother's good suggestion that changing mouse mat might be the answer to the frantic behaviour of the cursor on my desktop machine; since I bought the desktop an emac, with optical mouse it has skipped around erratically at seemingly-random times. Wriggly thing in hair
  • There is also high political risk resulting from the government's erratic and unpredictable policies. Times, Sunday Times
  • He was beginning to be able to interpret the erratic gestures of her left arm.
  • Did the jury feel that some of the most damning evidence against Scott Peterson was his own erratic behavior, such as dyeing his hair, growing a beard, preparing to leave the country? CNN Transcript Dec 14, 2004
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