1. [Adjective]: having or feeling no doubt or uncertainty; confident and assured; "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends"

2. [Adjective]: certain to occur; destined or inevitable; "he was certain to fail"; "his fate is certain"; "In this life nothing is certain but death and taxes"- Benjamin Franklin; "he faced certain death"; "sudden but sure regret"; "he is sure to win"

3. [Adverb]: definitely or positively (`sure'' is sometimes used informally for `surely''); "the results are surely encouraging"; "she certainly is a hard worker"; "it''s going to be a good day for sure"; "they are coming, for certain"; "they thought he had been kille

4. physically secure or dependable; "a sure footing"; "was on sure ground"

5. infallible or unfailing; "a sure (or true) sign of one''s commitment"

6. exercising or taking care great enough to bring assurance; "be certain to disconnect the iron when you are through"; "be sure to lock the doors"

7. capable of being depended on; "a quick and certain remedy"; "a sure way to distinguish the two"; "wood dust is a sure sign of termites"

8. certain not to fail; "a sure hand on the throttle"

9. (of persons) worthy of trust or confidence; "a sure (or trusted) friend"

10. impossible to doubt or dispute; "indisputable (or sure) proof"

Similar words to 'sure'

Opposite words to 'sure'

Try another search!

Look up words in the English4.Today Online Dictionary and add them to your own personal dictionary for vocabulary practice.

All you need to start your own personal dictionary web is a free English4.Today membership. Podcasts

Get immediate access to grammar tests, quizzes, exercises, pronuciation practice, vocabulary building, courses, and an online community all wanting to improve their English and help you improve yours! Standard membership is FREE!!