not level or flat; rough; rugged

The wheels bumped and jolted over the uneven surface.

irregular; varying; not uniform

The book is uneven in quality.

not equitable or fair; one-sided

an uneven contest.

not equally balanced; not symmetrical or parallel.

(of a number) odd; not divisible into two equal integers

The numerals 3, 5, and 7 are uneven.