It's smarter for the writer in passion (7)
I believe the answer is:
dandier
'it's smarter for the' is the definition.
I can't tell whether this definition defines the answer.
'writer in passion' is the wordplay.
I cannot really see how this works, but
'writer' could be 'i' (the person who is writing these clues) and 'i' is found in the answer.
The remaining letters 'dander' 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 dandier that I've seen before include "Better" , "More foppishly fashionable" .)