Crossword Genius

More certain (5)

Ross

I believe the answer is:

surer

'more certain' is the definition.
('sure' can be a synonym of 'certain')

This is all the clue.

(Other definitions for surer that I've seen before include "faster" , "more right?" , "More certain and positive" .)

I've seen this clue in The Star Tribune, the Sydney Morning Herald and the King Feature Syndicate.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.