(informal) A negligibly small chance; used primarily in negative constructions to express the idea of 'not even the smallest chance'.

Variant of a snowball's chance in hell.

present participle of chance upon

Alternative form of chance'd be a fine thing

To not believe that someone will achieve their stated aim.

present participle of chance one's arm

There is no guarantee that you will get the result you want.

Alternative form of you pays your money and you takes your chances

The space around the altar in a church, often enclosed, for use by the clergy and the choir. In medieval cathedrals the chancel was usually enclosed or blocked off from the nave by an altar screen.

(UK, Ireland, slang) A scheming opportunist.