This shows grade level based on the word's complexity.
certify
[ sur-tuh-fahy ]
/ ˈsɜr təˌfaɪ /
Save This Word!
This shows grade level based on the word's complexity.
verb (used with object), cer·ti·fied, cer·ti·fy·ing.
verb (used without object), cer·ti·fied, cer·ti·fy·ing.
to give assurance; testify; vouch for the validity of something (usually followed by to).
OTHER WORDS FOR certify
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Origin of certify
OTHER WORDS FROM certify
cer·ti·fi·er, nounpre·cer·ti·fy, verb (used with object), pre·cer·ti·fied, pre·cer·ti·fy·ing.re·cer·ti·fy, verb (used with object), re·cer·ti·fied, re·cer·ti·fy·ing.un·cer·ti·fy·ing, adjectiveWords nearby certify
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use certify in a sentence
British Dictionary definitions for certify
certify
/ (ˈsɜːtɪˌfaɪ) /
verb -fies, -fying or -fied
to confirm or attest (to), usually in writingthe letter certified her age
(tr) to endorse or guarantee (that certain required standards have been met)
to give reliable information or assuranceshe certified that it was Walter's handwriting
(tr) to declare legally insane
(tr) US and Canadian (of a bank) to state in writing on (a cheque) that payment is guaranteed
Derived forms of certify
certifier, nounWord Origin for certify
C14: from Old French certifier, from Medieval Latin certificāre to make certain, from Latin certus certain + facere to make
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