Honest, attractive; also unfashionable (4-3-6)
I believe the answer is:
fair-and-square
'honest' is the definition.
(I've seen this before)
'attractive also unfashionable' is the wordplay.
I cannot quite see how this works, but
'attractive' could be 'fair' (synonyms) and 'fair' is located in the answer.
'also' could be 'and' (both can mean in addition) and 'and' is located in the answer.
The remaining letters 'square' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for fair-and-square that I've seen before include "In a proper way" , "Honest" , "Legitimately" , "Precisely, honestly" , "On the level" .)