This shows grade level based on the word's complexity.
certain
[ sur-tn ]
/ ˈsɜr tn /
Save This Word!
This shows grade level based on the word's complexity.
adjective
pronoun
certain ones: Certain of the members declined the invitation.
OTHER WORDS FOR certain
1 convinced, satisfied.
5 determined.
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?
Idioms about certain
for certain, without a doubt; surely: I know for certain that I have seen that face before.
Origin of certain
First recorded in 1250–1300; Middle English, from Old French, from unattested Vulgar Latin certānus, equivalent to Latin cert(us) “sure, settled” (cer- base of cernere “to decide” + -tus past participle suffix) + -ānus-an
Words nearby certain
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
WHEN TO USE
What are other ways to say certain?
Someone who is certain of something is free from doubt or reservation about it. How is certain different from sure, confident, and positive? Find out on Thesaurus.com.
How to use certain in a sentence
British Dictionary definitions for certain
certain
/ (ˈsɜːtən) /
adjective
adverb
for certain definitely; without a doubthe will win for certain
determiner
- known but not specified or namedcertain people may doubt this
- (as pronoun; functioning as plural)certain of the members have not paid their subscriptions
named but not knownhe had written to a certain Mrs Smith
Word Origin for certain
C13: from Old French, from Latin certus sure, fixed, from cernere to discern, decide
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
Other Idioms and Phrases with certain
certain
see for certain.
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.