Nor fair to a Moebius strip? (3-5)
I believe the answer is:
one-sided
'strip?' is the definition.
Both the definition and answer are adjectives. Maybe you can see an association between them that I can't see?
'nor fair to a moebius' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'one' and 'one' is located in the answer.
The remaining letters 'sided' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for one-sided that I've seen before include "Unfair or partisan - single dimension?" , "So denied being partisan or unfair" , "Partial" , "Unfair or uneven" , "Unfair, unequal" .)