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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.

Lex: I definitely help him and elevate his style but he had great style before.

From Los Angeles Times

I wouldn’t be here if I didn’t love it, because you definitely don’t make money from it.”

From Los Angeles Times

Hayley Gee, from the Birmingham Dogs Home, said the organisation's vet bills had "definitely increased" and they have seen more dogs being handed in that need treatment that their owners cannot afford.

From BBC

"She's always been a blasing light in the darkness and if you didn't manage to see her, you would definitely hear her."

From BBC

When asked whether his difficulties were more mental or physical, the American, replied: "I think it was definitely mental."

From Barron's