definitely

adverb

def·​i·​nite·​ly ˈde-fə-nit-lē How to pronounce definitely (audio)
ˈdef-nət-
1
: in a definite way : in a way free of all ambiguity, uncertainty, or obscurity
I will definitely be there.
He's very smart and very funny and is definitely a practical actor. He comes to work to get his job done and to make the best movie possible …Anna Kendrick
Omaha is definitely not hip; green-haired XML programmers do not glide past gourmet coffee emporiums on Razor scooters.Adam Rogers
2
a
used in speech as a forceful way of expressing agreement or saying "yes"
"Do you think they'll win?" "Definitely!"
b
used in speech in the phrase definitely not as a forceful way of expressing disagreement or saying "no"
"Do you agree with him?" "Definitely not!"

Examples of definitely in a Sentence

that is definitely the kind of dog we're looking to adopt
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And that, my fellow leaders, is a rare privilege that is definitely worth the cost. Joe Altieri, Forbes.com, 20 June 2025 The 6-1, 215-pound four-star from Illinois definitely improved his stock. Bruce Feldman, New York Times, 20 June 2025 The Green Party candidate may have been responsible for Clinton losing in 2016 - and Ralph Nader was definitely responsible for Gore losing in 2000 (Nader won about 90K votes in Florida, most of which would have gone to Gore who lost state by fewer than 600 votes). Mandy Taheri, MSNBC Newsweek, 20 June 2025 With today being the first official day of summer, things are definitely heating up. Okla Jones, Essence, 20 June 2025 See All Example Sentences for definitely

Word History

Etymology

definite + -ly entry 2

First Known Use

1574, in the meaning defined at sense 1

Time Traveler
The first known use of definitely was in 1574

Cite this Entry

“Definitely.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/definitely. Accessed 27 Jun. 2025.

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