certainly

adverb
cer·tain·ly | \-lē \

Definition of certainly 

1 : in a manner that is certain : with certainty

2 : it is certain that : assuredly

Keep scrolling for more

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.
See More

Recent Examples on the Web

IceCube almost certainly has more surprises in store. Mark Bowen, Scientific American, "Neutrinos on Ice: Astronomers' Long Hunt for Source of Extragalactic "Ghost Particles" Pays Off," 12 July 2018 Pamela Adlon certainly had a challenging year, what with her friend and Better Things collaborator Louis C.K.’s downfall in the opening days of the #MeToo movement. Anna Silman, The Cut, "Sandra Oh and Issa Rae Finally Got the Emmy Nods They Deserve," 12 July 2018 Miami would have certainly had a better chance to win that series. Manny Navarro, miamiherald, "Heat Check mailbag: After missing out on LaVine could Tyler Johnson be a fit for Kings?," 9 July 2018 Life in the royal family certainly has its perks, but the responsibility also comes with its set of rules. Lauren Rearick, Teen Vogue, "The Royal Family Reportedly Cannot Eat Garlic," 8 July 2018 Europa certainly has its champions in the scientific community, which conducts surveys every decade to establish top priorities. Eric Berger, Ars Technica, "Senior scientist argues that we should bypass Europa for Enceladus," 5 July 2018 The Yankees, Red Sox, Indians and Astros are almost certainly going to the postseason. Ted Berg, For The Win, "The American League postseason races could be historically boring," 5 July 2018 Our incomes are certainly aren't going up 80 percent to compensate for that, and what that is doing is a wave of aggressive economic displacement of the communities that have always been here. Bridget Read, Vogue, "28-Year-Old Alexandria Ocasio-Cortez Might Just Be the Future of the Democratic Party," 25 June 2018 That, certainly, is the Google vision of what its app can do. Rory Smith, New York Times, "The Google Translate World Cup," 13 July 2018

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.

See More

First Known Use of certainly

14th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about certainly

Phrases Related to certainly

certainly not

Statistics for certainly

Last Updated

12 Oct 2018

Look-up Popularity

Time Traveler for certainly

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

See more words from the same century

Keep scrolling for more

More Definitions for certainly

certainly

adverb

English Language Learners Definition of certainly

: without doubt

: of course

certainly

adverb
cer·tain·ly | \ˈsər-tᵊn-lē \

Kids Definition of certainly

1 : without fail I will certainly help.

2 : without doubt You certainly don't look your age.

Keep scrolling for more

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).

WORD OF THE DAY

required by fashion, etiquette, or custom

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!