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boundless

[bound-lis]
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adjective
  1. having no bounds; infinite or vast; unlimited: His boundless energy amazed his friends.
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Origin of boundless

First recorded in 1585–95; bound3 + -less
Related formsbound·less·ly, adverbbound·less·ness, noun

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for boundless

boundless

adjective
  1. unlimited; vastboundless energy
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Derived Formsboundlessly, adverbboundlessness, 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

Word Origin and History for boundless

adj.

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

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Online Etymology Dictionary, © 2010 Douglas Harper