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[uhn-stop-uh-buh l] /ʌnˈstɒp ə bəl/
that cannot be stopped or surpassed; unbeatable:
an unstoppable ball team.
Origin of unstoppable
First recorded in 1830-40; un-1 + stoppable
Related forms
unstoppably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for unstoppable
Contemporary Examples
Historical Examples
  • He felt as though he had been caught in the wheels of an unstoppable machine and was in vague but serious danger.

  • As that unstoppable globe descended through office after office, it neither sought out people nor avoided them.

    The Galaxy Primes Edward Elmer Smith
  • Even if she had excused me, the children would have raised an unstoppable howl, and probably would have followed us.

    Mary Ware in Texas

    Annie F. Johnston
  • The landlord, an unstoppable gramophone of garrulity, entering by the street-door and bearing down upon him, put him to flight.

British Dictionary definitions for unstoppable


not capable of being stopped; extremely forceful
Derived Forms
unstoppably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for unstoppable

1836; see un- (1) "not" + stop (v.) + -able.

Online Etymology Dictionary, © 2010 Douglas Harper
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