Good girl battling against male's ultimate fiascos? (9)
I believe the answer is:
glassware
'fiascos?' is the definition.
(fiasco is a type of glass bottle)
'good girl battling against male's ultimate' is the wordplay.
'good girl' becomes 'glass' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'battling' becomes 'war' (having a fight).
'against' says to put letters next to each other.
'ultimate' indicates one should take the final letters.
The last letter of 'male' is 'e'.
'glass'+'war'+'e'='GLASSWARE'
(Other definitions for glassware that I've seen before include "one can see through" , "Vitreous items" , "Retorts, for example" , "it might be crystal" .)