9 Grammatical Pitfalls


[v. kuh-rob-uh-reyt; adj. kuh-rob-er-it] /v. kəˈrɒb əˌreɪt; adj. kəˈrɒb ər ɪt/
verb (used with object), corroborated, corroborating.
to make more certain; confirm:
He corroborated my account of the accident.
Archaic. confirmed.
Origin of corroborate
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
[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.
1. verify, authenticate, support, validate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for corroborate
  • But there is not yet unequivocal archaeological evidence to corroborate this story.
  • It might be possible to contact him to corroborate the story.
  • There is demographic information to corroborate this possibility.
  • But that's a pretty far-fetched story and should be easy to corroborate.
  • But this particular story was too outsize to ignore, and the quest to corroborate it took on a life of its own.
  • You're basing your entire work on string theory, but the physical evidence doesn't exist to corroborate what you're suggesting.
  • And to have brain research corroborate it is rather unscientific, since the aim of research should be objective.
  • But large, long-term studies have mostly failed to corroborate initial signs of the cancer-fighting powers of produce.
  • If anything, those links corroborate sea level rise.
  • My own experience with severe depression and with medications to treat it corroborate the validity of those findings.
British Dictionary definitions for corroborate


verb (kəˈrɒbəˌreɪt)
(transitive) to confirm or support (facts, opinions, etc), esp by providing fresh evidence: the witness corroborated the accused's statement
adjective (archaic) (kəˈrɒbərɪt)
serving to corroborate a fact, an opinion, etc
(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 corroborate

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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