Uneven, a.
Etymology: [AS. unefen. See Un- not, and Even, a.]
1. Not even; not level; not uniform; rough; as, an uneven road or way; uneven ground.
2. Not equal; not of equal length. Hebrew verse consists of uneven feet. Peacham.
3. Not divisible by two without a remainder; odd; -- said of numbers; as, 3, 7, and 11 are uneven numbers. Un*e"ven*ly, adv. -- Un*e"ven*ness, n.
Shades of meaning
Fernald lists uneven only as an antonym, under horizontal.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given