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

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 Given their different aims, both books can profitably and pleasurably be read side by side, and certainly Stieglitz deserves this degree of attention, in this or any other season. Wendy Lesser, WSJ, "‘Foursome’ and ‘Alfred Stieglitz’ Review: The Intimate Gallerist," 5 Apr. 2019 If Netflix does give show creator Victor Fresco the go-ahead on a new season, there will certainly be lots of things to address. Kayla Keegan, Good Housekeeping, "All the 'Santa Clarita Diet' Season 4 Info You Need to Know After Finishing Season 3," 5 Apr. 2019 These trial periods usually last a weekend or maybe a week, certainly not an entire month. Hayden Dingman, PCWorld, "Call of Duty: Black Ops 4's battle royale mode Blackout is free to play throughout April," 2 Apr. 2019 Dunne is certainly dedicated to the prince and has shown him plenty of love over the past four years. Nicole Saunders, Harper's BAZAAR, "Prince Harry and Meghan Markle Surprised His Biggest Fan on Her 99th Birthday," 29 Mar. 2019 The death toll, too, will almost certainly rise; cases of cholera have now been reported, along with an increase in malaria cases. Kelsey Piper, Vox, "Why disaster relief is so hard," 25 Mar. 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

13 Apr 2019

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


not to be persuaded, moved, or stopped

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