Unpaired \Un*paired\, a. Not paired; not suited or matched. [1913 Webster]

And minds unpaired had better think alone. --Crabbe. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

unpaired adj : of the remaining member of a pair, of socks e.g. [syn: odd, unmatched, unmated]

Source: WordNet (r) 2.0
 

Unpaired \Un*paired\, a. Not paired; not suited or matched.

And minds unpaired had better think alone. --Crabbe.

Source: Webster's Revised Unabridged Dictionary (1913)