Exceptional, one-off (8)
I believe the answer is:
singular
(Other definitions for singular that I've seen before include "number" , "Remarkable; not plural" , "Gnu's lair (anag.)" , "One of a kind" , "Referring to one thing" .)
I believe the answer is:
singular
(Other definitions for singular that I've seen before include "number" , "Remarkable; not plural" , "Gnu's lair (anag.)" , "One of a kind" , "Referring to one thing" .)