erratic

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English[edit]

Alternative forms[edit]

Etymology[edit]

From Old French erratique, from Latin erraticus.

Pronunciation[edit]

Adjective[edit]

erratic (comparative more erratic, superlative most erratic)

  1. unsteady, random; prone to unexpected changes; not consistent
    Henry has been getting erratic scores on his tests: 40% last week, but 98% this week.
  2. Deviating from the common course in opinion or conduct; eccentric; odd.
    erratic conduct

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Noun[edit]

erratic (plural erratics)

  1. (geology) A rock moved from one location to another, usually by a glacier.
    • 2003, Bill Bryson, A Short History of Nearly Everything, BCA 2003, p. 372:
      The term for a displaced boulder is an erratic, but in the nineteenth century the expression seemed to apply more often to the theories than to the rocks.
  2. Anything that has erratic characteristics.

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