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[dih-mon-struh-buh l, dem-uh n-] /dɪˈmɒn strə bəl, ˈdɛm ən-/
capable of being demonstrated or proved.
clearly evident; obvious:
a demonstrable lack of concern for the general welfare.
1350-1400; Middle English < Old French < Late Latin dēmonstrābilis, equivalent to Latin dēmonstrā(re) (see demonstrate) + -bilis -ble
Related forms
demonstrability, demonstrableness, noun
demonstrably, adverb
nondemonstrability, noun
nondemonstrable, adjective
nondemonstrableness, noun
nondemonstrably, adverb
undemonstrable, adjective
undemonstrableness, noun
undemonstrably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for demonstrably
  • We've seen what that does, so it's a demonstrably bad economic system.
  • Modern editions contain poems which are demonstrably not his, while there are genuine poems still unpublished.
  • We do not have legal safeguards from people who seem to be nuts but have not been demonstrably dangerous.
  • She believes something that is provably, demonstrably, objectively not true.
  • The fact that they demonstrably can spontaneously combust three weeks after being damaged is a matter of great concern.
  • Money and manpower would not be wasted on prisons, which demonstrably do not deter.
  • The attempt to keep technicalities in perspective has demonstrably failed.
  • As a statement of fact, of course, it's demonstrably false.
  • And indeed, in some case the past was demonstrably better.
  • In high doses, they are demonstrably harmful to farm workers.
British Dictionary definitions for demonstrably


/ˈdɛmənstrəbəl; dɪˈmɒn-/
able to be demonstrated or proved
Derived Forms
demonstrability, demonstrableness, noun
demonstrably (ˈdɛmənstrəblɪ; dɪˈmɒn-) 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 demonstrably



c.1400, from Latin demonstrabilis, from demonstrare (see demonstration). Related: Demonstrably.

Online Etymology Dictionary, © 2010 Douglas Harper
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