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[uhn-boun-did] /ʌnˈbaʊn dɪd/
having no limits, borders, or bounds.
unrestrained; uncontrolled:
unbounded enthusiasm.
Origin of unbounded
1590-1600; un-1 + bound3 + -ed3
Related forms
unboundedly, adverb
unboundedness, noun
Can be confused
unbound, unbounded.
1. limitless, immense, vast, infinite, immeasurable. 2. unconfined, immoderate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for unbounded
  • The scope for friction within the coalition, a kind of war of attrition, is almost unbounded.
  • In contrast, interactive computer games create a space seemingly without horizons, finite yet unbounded.
  • The point being made is nothing more extraordinary than that human brotherhood is unbounded by race or color.
  • People are finite, but unbounded resources that require consensus to increase in magnitude.
  • LC, the correct wording is that the real number line is unbounded.
  • See also knapsack problem, unbounded knapsack problem.
  • Their playing is the combination of unbounded spirit with the highest levels of musicianship and discipline.
  • The dynamics of highly sooting fires in unbounded domains may also be strongly influenced by thermal radiation.
  • Therefore the adjoint of a unbounded operator is necessarily unbounded.
British Dictionary definitions for unbounded


having no boundaries or limits
Derived Forms
unboundedly, adverb
unboundedness, 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 unbounded

1590s, "not limited in extent," from un- (1) "not" + past participle of bound (v.1). Sense of "generous, profuse, liberal" is recorded from 1704.

Online Etymology Dictionary, © 2010 Douglas Harper
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