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[bound-lis] /ˈbaʊnd lɪs/
having no bounds; infinite or vast; unlimited:
His boundless energy amazed his friends.
Origin of boundless
First recorded in 1585-95; bound3 + -less
Related forms
boundlessly, adverb
boundlessness, noun
limitless, endless, unbounded, inexhaustible, illimitable. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for boundless
Contemporary Examples
Historical Examples
  • The capital of the Territory was composed chiefly of roofs and dormer windows, of squatty wooden islands in a boundless sea.

    Old Kaskaskia Mary Hartwell Catherwood
  • She had boundless admiration for her queen, amounting actually to idolatry.

    Samuel Brohl & Company Victor Cherbuliez
  • This narrow isthmus 'twixt two boundless seas, / The past, the future—two eternities.

  • What enthusiasm they have in their own concerns, what boundless faith in themselves!

    The Friendly Road (AKA David Grayson) Ray Stannard Baker
  • Formerly, during the prevalence of plague and epidemics, the arrogance of the priest was boundless.

    The Ghosts Robert G. Ingersoll
British Dictionary definitions for boundless


unlimited; vast: boundless energy
Derived Forms
boundlessly, adverb
boundlessness, noun
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 boundless

1590s, from bound (n.) + -less. Related: Boundlessly; boundlessness.

Online Etymology Dictionary, © 2010 Douglas Harper
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