[ shoor, shur ]
/ ʃʊər, ʃɜr /
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See synonyms for: sure / surest / sureness on Thesaurus.com

adjective, sur·er, sur·est.


Informal. certainly; surely: It sure is cold out. Sure, I'll come.



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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Idioms for sure

Origin of sure

First recorded in 1300–50; Middle English sur(e), from Middle French sur,Old French seur, from Latin sēcūrus “carefree”; see secure
Both sure and surely are used as intensifying adverbs with the sense “undoubtedly, certainly.” In this use, sure is generally informal and occurs mainly in speech and written representations of speech: She sure dazzled the audience with her acceptance speech. It was sure hot enough in the auditorium. Surely is used in this sense in all varieties of speech and writing, even the most formal: The court ruled that the law was surely meant to apply to both profit-making and nonprofit organizations. See also quick, slow.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021


What are other ways to say sure?

Someone who is sure of something is free from doubt about its reliability or character. How does sure compare to synonyms certain, confident, or positive? Learn more on Thesaurus.com

British Dictionary definitions for sure

/ (ʃʊə, ʃɔː) /



(sentence substitute) informal willingly; yes
(sentence modifier) informal, mainly US and Canadian without question; certainly
sureness, noun
C14: from Old French seur, from Latin sēcūrus secure
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

Idioms and Phrases with sure


The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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