Better and Unpaired

Better adjective - (comparative of `good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another.

Unpaired and better are semantically related. In some cases you can use "Unpaired" instead an adjective "Better".

Unpaired adjective - Being one of a pair or set without a corresponding mate.

Better and unpaired are semantically related. Sometimes you can use "Better" instead an adjective "Unpaired".