Sure

·superl Betrothed; engaged to marry.

II. Sure ·superl Free from danger; safe; secure.

III. Sure ·adv In a sure manner; safely; certainly.

IV. Sure ·superl Certainly knowing and believing; confident beyond doubt; implicity trusting; unquestioning; positive.

V. Sure ·superl Certain to find or retain; as, to be sure of game; to be sure of success; to be sure of life or health.

VI. Sure ·superl Fit or worthy to be depended on; certain not to fail or disappoint expectation; unfailing; strong; permanent; enduring.

sure
, or shore. See shore. ...

The Sailor's Word-Book
Pot-sure
·adj Made confident by drink. ...

Webster's Dictionary of the English Language
Sure-footed
·adj Not liable to stumble or fall; as, a sure-footed horse. ...

Webster's Dictionary of the English Language
cock-sure
Certain: a metaphor borrowed front the cock of a firelock, as being much more certain to fire than t...

Dictionary of The Vulgar Tongue by Francis Grose
sure as a gun
Absolutely certain. A common colloquial expression.--Brockett. There's luck, says auld Lizzy, in fa...

Dictionary of American Words And Phrases by John Russell Bartlett.