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Synonyms

definitely

American  
[def-uh-nit-lee] / ˈdɛf ə nɪt li /

adverb

  1. in a clear and definite manner; unambiguously.

  2. unequivocally; positively.

    Synonyms:
    certainly, absolutely

interjection

  1. (used to express complete agreement or strong affirmation).

    Are you starting your diet tomorrow? Definitely!

definitely British  
/ ˈdɛfɪnɪtlɪ /

adverb

  1. in a definite manner

  2. (sentence modifier) certainly

    he said he was coming, definitely

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

  1. unquestionably: used to confirm an assumption by a questioner

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does definitely mean? Definitely is an adverb that usually means certainly or without a doubt. It also has this meaning when it’s used as a single-word response.Definitely is also sometimes used as an adverb to describe an action as clearly defined or precise. When definitely is used as a single word in response to a question or other statement, it is called an interjection or sentence substitute. When used this way, it is very similar to saying certainly or absolutely.Example: I will definitely be there tomorrow—I promise.

Related Words

See clearly.

Etymology

Origin of definitely

First recorded in 1575–85; definite + -ly

Compare meaning

How does definitely compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“There were definitely a couple things that I didn’t have on my radar, like the Latin Grammys was one of them,” Rojas said.

From Los Angeles Times

“If the service seems reliable and works pretty much on its own, I’d definitely be willing to use it more,” Wu said.

From The Wall Street Journal

Stunned, he held his head in his hands after his disastrous performance and said afterwards his failure was "definitely mental".

From Barron's

And the message-board-born concept of a “lolcow,” a gullible user who can be goaded into making a fool of themselves on a regular basis, definitely predated the music video.

From Salon

Stoecker, who finished fifth in the women's skeleton finals on Saturday, also told Radio 4's Today programme that the circus had definitely prepared her for the "adrenaline" of skeleton.

From BBC