(informal) A polite reply to thank you. / An affirmative reply; yes; certainly.

(US) That which is certain.

(idiomatic, evaluative) Just as one would expect.

plural of sure thing

In a slow, yet careful manner.

Eggcorn of shore up.

(simile, colloquial) surely; doubtlessly

Alternative form of surefooted

The quality or state of being sure-footed

(probability theory) With probability equal to one.