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Sure vs Definitely - What's the difference?

sure | definitely |

As adverbs the difference between sure and definitely

is that sure is without doubt while definitely is without question and beyond doubt.

As an adjective sure

is physically secure and certain, non-failing, reliable.

As an interjection sure

is yes, of course.

sure

English

Adjective

(er)
  • Physically secure and certain, non-failing, reliable.
  • Certain in one's knowledge or belief.
  • *
    • , title=(The Celebrity), chapter=4 , passage=The Celebrity, by arts unknown, induced Mrs. Judge Short and two other ladies to call at Mohair on an afternoon when Mr. Cooke was trying a trotter on the track. The three returned wondering and charmed with Mrs. Cooke; they were sure she had had no hand in the furnishing of that atrocious house.}}
  • Certain to act or be a specified way.
  • (obsolete) Free from danger; safe; secure.
  • * Shakespeare
    • Fear not; the forest is not three leagues off; / If we recover that we are sure enough.
  • (obsolete) Betrothed; engaged to marry.
  • * Sir T. More
    • The king was sure to Dame Elizabeth Lucy, and her husband before God.
  • * Brome
    • I presume that you had been sure as fast as faith could bind you, man and wife.

    Synonyms

    * (secure and steadfast) certain, failsafe, reliable * (sense, steadfast in one's knowledge or belief) certain, positive, wis

    Derived terms

    * for sure * surely * sure up (sure)

    Adverb

    (en adverb)
  • Without doubt.
    • Sure he's coming! Why wouldn't he?
    "Did you kill that bear yourself? ?"I sure did!"

    Usage notes

    * Often proscribed in favor of surely. May be informal.

    Interjection

    (en interjection)
  • (rft-sense) Yes, of course.

    • Synonyms

    * certainly, of course, OK, yes

    References

    * 1996, T.F. Hoad, The Concise Oxford Dictionary of Etymology , Oxford University Press, ISBN 0192830988

    Statistics

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    Anagrams

    * * * English modal adverbs 1000 English basic words ----

    definitely

    English

    Adverb

    (en adverb)
  • Without question and beyond doubt.
    • The mother definitely has love for her child.
  • In a definite manner; decisively.
  • * Nikolai Gogol, The Nose (in translation)
    • And the Nose definitely turned away.