Not even peculiar (3)
I believe the answer is:
odd
I believe this is a double definition.
'not even' is the first definition.
('odd' is the opposite to 'even')
'peculiar' is the second definition.
(I've seen this before)
(Other definitions for odd that I've seen before include "Freakish" , "Not even; strange" , "Not even? That's peculiar" , "standing out from the crowd?" , "Number not divisible by two" .)