cer·​tain·​ly | \ ˈsər-tᵊn-lē How to pronounce certainly (audio) \

Definition of certainly

1 : in a manner that is certain : with certainty
2 : it is certain that : assuredly

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Examples of certainly in a Sentence

It will certainly rain tomorrow. This year's festival was certainly much better than last year's. I'm certainly going to try. The new version is most certainly easier to use. The snake that bit her was almost certainly poisonous.
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Recent Examples on the Web

The artist, who hand paints all his products in St.-Estephe, France, also showcased examples of single faces on individual plates—a charming surprise, certainly, for any dinner guest upon finishing their meal. Hadley Keller, House Beautiful, "You Can Get Your Face Handpainted on Your Fine China," 3 Apr. 2019 On Groundhog's Day, the fortune-telling rodent predicted an early spring, but winter certainly doesn't seem to be winding down, according to this week's harsh forecast. Jennifer Aldrich, Country Living, "Brace Yourselves: The Entire Country Will be Hit by a Brutal Winter Storm This Week," 12 Feb. 2019 Sophie Turner and Joe Jonas have certainly had an eventful couple of weeks. Abby Gardner, Glamour, "Sophie Turner and Joe Jonas Wore Matching Outfits for Their First Red Carpet as a Married Couple," 7 May 2019 This certainly isn't the first time the couple has made a case for matching with your significant other. Lauren Rearick, Teen Vogue, "Miley Cyrus and Liam Hemsworth Wore Coordinating Outfits to the “Avengers: Endgame” Premiere," 23 Apr. 2019 Men don’t often have the chance to don bijoux, and the pair certainly took the opportunity. Will Kahn, Town & Country, "The Story Behind Marc Jacobs' Wedding Cufflinks and Penguin Pins," 17 Apr. 2019 Fenet certainly knows the importance of atmosphere in her command of a room. Mai Morsch, Vogue, "Christie’s Auctioneer Lydia Fenet Hosts a Winning Dinner to Celebrate Her First Book," 10 Apr. 2019 Multiple star candidates would almost certainly push Seattle’s ownership into approving a GM hiring this summer. Geoff Baker, The Seattle Times, "When will Seattle’s NHL franchise hire a general manager? The answer may lie in Edmonton.," 10 Apr. 2019 From having matching moments on the red carpet to talking all night long at sleepovers, the Stark sisters have certainly kept their sibling bond going even when the cameras stopped rolling. De Elizabeth, Teen Vogue, "Maisie Williams Jokes About "Game of Thrones" and Friendship With Sophie Turner," 7 Apr. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'certainly.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of certainly

14th century, in the meaning defined at sense 1

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Statistics for certainly

Last Updated

25 May 2019

Look-up Popularity

Time Traveler for certainly

The first known use of certainly was in the 14th century

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More Definitions for certainly



English Language Learners Definition of certainly

: without doubt
: of course


cer·​tain·​ly | \ ˈsər-tᵊn-lē How to pronounce certainly (audio) \

Kids Definition of certainly

1 : without fail I will certainly help.
2 : without doubt You certainly don't look your age.

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Comments on certainly

What made you want to look up certainly? Please tell us where you read or heard it (including the quote, if possible).


a strong desire or propensity

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