in a clear and definite manner; unambiguously.
unequivocally; positively.


(used to express complete agreement or strong affirmation): Are you starting your diet tomorrow? Definitely!

Nearby words

  1. definite article,
  2. definite description,
  3. definite integral,
  4. definite relative clause,
  5. definite relative pronoun,
  6. definition,
  7. definitive,
  8. definitive host,
  9. definitive plumage,
  10. definitize

Origin of definitely

First recorded in 1575–85; definite + -ly

SYNONYMS FOR definitely
1. See clearly. 2. absolutely, certainly. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for definitely

British Dictionary definitions for definitely



in a definite manner
(sentence modifier) certainlyhe said he was coming, definitely

sentence substitute

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

Word Origin and History for definitely



1580s, from definite + -ly (2). As a colloquial emphatic word, attested by 1931.

Online Etymology Dictionary, © 2010 Douglas Harper