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corroborate

[v. kuh-rob-uh-reyt; adj. kuh-rob-er-it] /v. kəˈrɒb əˌreɪt; adj. kəˈrɒb ər ɪt/
verb (used with object), corroborated, corroborating.
1.
to make more certain; confirm:
He corroborated my account of the accident.
adjective
2.
Archaic. confirmed.
Origin
1520-1530
1520-30; < Latin corrōborātus past participle of corrōborāre to strengthen, equivalent to cor- cor- + rōbor(āre) to make strong (derivative of rōbor, rōbur oak (hence, strength); see robust) + -ātus -ate1
Related forms
corroborative
[kuh-rob-uh-rey-tiv, -er-uh-tiv] /kəˈrɒb əˌreɪ tɪv, -ər ə tɪv/ (Show IPA),
corroboratory, adjective
corroboratively, corroboratorily, adverb
corroborator, noun
noncorroborating, adjective
noncorroborative, adjective
noncorroboratively, adverb
noncorroboratory, adjective
uncorroborated, adjective
uncorroborative, adjective
uncorroboratively, adverb
uncorroboratory, adjective
Can be confused
collaborate, corroborate.
Synonyms
1. verify, authenticate, support, validate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un corroborative

corroborate

verb (kəˈrɒbəˌreɪt)
1.
(transitive) to confirm or support (facts, opinions, etc), esp by providing fresh evidence the witness corroborated the accused's statement
adjective (archaic) (kəˈrɒbərɪt)
2.
serving to corroborate a fact, an opinion, etc
3.
(of a fact) corroborated
Derived Forms
corroboration, noun
corroborative (kəˈrɒbərətɪv), corroboratory, adjective
corroboratively, adverb
corroborator, noun
Word Origin
C16: from Latin corrōborāre to invigorate, from rōborāre to make strong, from rōbur strength, literally: oak
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 un corroborative

corroborate

v.

1530s, "to give (legal) confirmation to," from Latin corroboratus, past participle of corroborare "to strengthen, invigorate," from com- "together" or "thoroughly" (see com-) + roborare "to make strong," from robur, robus "strength," (see robust).

Meaning "to strengthen by evidence, to confirm" is from 1706. Sometimes in early use the word also has its literal Latin sense, especially of medicines. Related: Corroborated; corroborating; corroborative.

Online Etymology Dictionary, © 2010 Douglas Harper
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