- (superl.) Certainly knowing and believing; confident beyond doubt; implicity trusting; unquestioning; positive.
- (superl.) Fit or worthy to be depended on; certain not to fail or disappoint expectation; unfailing; strong; permanent; enduring.
- (superl.) Free from danger; safe; secure.
- (superl.) Certain to find or retain; as, to be sure of game; to be sure of success; to be sure of life or health.
- (superl.) Betrothed; engaged to marry.
- (adv.) In a sure manner; safely; certainly.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sure. Retrieved September 20, 2026, from http://smartdefine.org/sure/definitions/2068971 |
| Chicago | Webster's. 2011. "sure" http://smartdefine.org/sure/definitions/2068971 (accessed September 20, 2026). |
| Harvard | Webster's 2011, sure, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/sure/definitions/2068971>. |
| MLA | Webster's. "sure" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/sure/definitions/2068971> |