Clearly not even half a strange thing (6)
I believe the answer is:
oddity
This clue could be a double definition.
'clearly not even half' is the first definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'a strange thing' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for oddity that I've seen before include "Curious thing" , "Quality of strangeness" , "Something strange or eccentric" , "Something strange or peculiar" , "Curiosity, curio" .)