un demonstrably

demonstrable

[dih-mon-struh-buhl, dem-uhn-]
adjective
1.
capable of being demonstrated or proved.
2.
clearly evident; obvious: a demonstrable lack of concern for the general welfare.

Origin:
1350–1400; Middle English < Old French < Late Latin dēmonstrābilis, equivalent to Latin dēmonstrā(re) (see demonstrate) + -bilis -ble

demonstrability, demonstrableness, noun
demonstrably, adverb
nondemonstrability, noun
nondemonstrable, adjective
nondemonstrableness, noun
nondemonstrably, adverb
undemonstrable, adjective
undemonstrableness, noun
undemonstrably, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
demonstrable (ˈdɛmənstrəbəl, dɪˈmɒn-)
 
adj
able to be demonstrated or proved
 
demonstra'bility
 
n
 
'demonstrableness
 
n
 
demonstrably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

demonstrable
c.1400, from L. demonstrabilis, from demonstrare (see demonstration). Related: Demonstrably (1640s).
Online Etymology Dictionary, © 2010 Douglas Harper
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