certainly
adverb
cer·tain·ly
ˈsər-tᵊn-lē 
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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Not having Barkov, Tkachuk, Dmitry Kulikov, Eetu Luostarinen, Tomas Nosek and more has certainly taken a toll on the Panthers, as would be expected.
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Laura Itzkowitz, Travel + Leisure, 3 Dec. 2025
Not having Barkov, Tkachuk, Dmitry Kulikov, Eetu Luostarinen, Tomas Nosek and more has certainly taken a toll on the Panthers, as would be expected.
—CBS News, 3 Dec. 2025
This mind-et certainly can endear one to teammates.
—Miami Herald, 3 Dec. 2025
Microsoft certainly hasn’t missed it.
—Reed Albergotti, semafor.com, 3 Dec. 2025
See All Example Sentences for certainly
Cite this Entry
“Certainly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/certainly. Accessed 10 Dec. 2025.
Copy CitationKids Definition
certainly
adverb
cer·tain·ly
ˈsərt-ᵊn-lē
1
: in a manner that is certain : for certain
the only event of which anything is certainly known
2
: without doubt : surely
certainly you can do it
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