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

Something else to notice: Hamnett’s wearing leggings and Converse sneakers, too—her style uncompromised by being at certainly the most prestigious party in London, at the very seat of British political power. Vogue, "The Women Designers Who Changed The Way We Dress," 14 Aug. 2019 Last, but certainly not least, there's the simple fact that neon makeup looks damn good on all skin tones. Leah Prinzivalli, Allure, "Neon Makeup Is the Brightest Beauty Trend of the Summer — Here's How to Wear It," 14 Aug. 2019 Zach is also seen punching Monty, so there will certainly be tension there between them. Tamara Fuentes, Seventeen, "Here's Who We Think Killed Bryce Walker Based on the Latest "13 Reasons Why" Season 3 Trailer," 14 Aug. 2019 For something that feels a little more high end, this Napoleon grill is certainly an upgrade. Kelly Dawson, House Beautiful, "How to Clean a Grill Without Soap and Water," 14 Aug. 2019 That's certainly a positive step forward for season three. Christopher Rosa, Glamour, "Everything We Know So Far About The Crown Season 3," 14 Aug. 2019 These various adaptations of the classic Cinderella fairytale are certainly fun, with the right amount of cheesiness and romance. Gianluca Russo, Teen Vogue, "It's Time For a More Inclusive "Cinderella Story"," 11 Aug. 2019 Assistance from the United Kingdom would, therefore, certainly be required in the form of technical help and training. Raghvendra Singh, Quartz India, "What Britain gained by partitioning the subcontinent into India and Pakistan," 9 Aug. 2019 The object certainly looked like a whale bone, but as soon as my fingers touched it, my skin recognized it as plastic. Daniel Wolfe, Quartz, "How plastic turns into rocks and ends up on our beaches," 8 Aug. 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

17 Aug 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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not constant or steady

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