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⇱ erratic - WordReference.com Dictionary of English

erratic

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ɪˈrætɪk/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ɪˈrætɪk/ ,USA pronunciation: respelling(i rat′ik)


WordReference Random House Learner's Dictionary of American English © 2026
er•rat•ic /ɪˈrætɪk/USA pronunciation   adj. 
  1. changeable in behavior or style;
    unpredictable:behavior too erratic to trust.
er•rat•i•cal•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2026
er•rat•ic  (i rat′ik),USA pronunciation adj. 
  1. deviating from the usual or proper course in conduct or opinion;
    eccentric;
    queer:erratic behavior.
  2. having no certain or definite course;
    wandering;
    not fixed:erratic winds.
  3. Geologynoting or pertaining to a boulder or the like carried by glacial ice and deposited some distance from its place of origin.
  4. Fungi(of a lichen) having no attachment to the surface on which it grows.

n. 
  1. an erratic or eccentric person.
  2. Geologyan erratic boulder or the like.
  • Latin errāticus, equivalent. to errāt(us) (past participle of errāre to err) + -icus -ic
  • Middle English 1325–75
er•rat′i•cal•ly, adv. 
er•rat′i•cism, n. 
    1. unpredictable, unstable, capricious.
    1. consistent, regular, stable.
Collins Concise English Dictionary © HarperCollins Publishers::
erratic /ɪˈrætɪk/ adj also: erratical
  1. irregular in performance, behaviour, or attitude; inconsistent and unpredictable
  2. having no fixed or regular course; wandering
 n
  1. a piece of rock that differs in composition, shape, etc, from the rock surrounding it, having been transported from its place of origin, esp by glacial action
Etymology: 14th Century: from Latin errāticus, from errāre to wander, errerˈratically adv
'erratic' also found in these entries (note: many are not synonyms or translations):

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