definitely

adverb

def·​i·​nite·​ly ˈde-fə-nit-lē 

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!"

Synonyms

• certainly
• surely
• sure
• clearly
• probably
• really

Examples of definitely in a Sentence

that is definitely the kind of dog we're looking to adopt

Recent Examples on the Web

And Virginia Beach is definitely at the top of the list for fall weekend getaways. —Beth Luberecki, USA Today, 4 Oct. 2025

While Mariota did his job as the backup quarterback, the Commanders are definitely a more explosive offense when Daniels is running the show. —Mark Kern, MSNBC Newsweek, 3 Oct. 2025

So what interested me was definitely the complexity of this character, who is presented not as being all peaches and cream, but as a character with very dark, even toxic, aspects of her personality. —Nick Vivarelli, Variety, 2 Oct. 2025

Figuring out what programs and paddles to use was definitely cool, but probably too much for most folks. —Bon Appétit, Bon Appetit Magazine, 2 Oct. 2025

Word History

Etymology

definite + -ly entry 2

First Known Use

1574, in the meaning defined at sense 1

Rhymes for definitely

• indefinitely

Video

How to Remember the Spelling of 'Definitely'

A definitive answer.