Bitchy? Yes and no (5)
I believe the answer is:
catty
'bitchy?' is the definition.
('catty' can be a synonym of 'bitchy')
I cannot understand how the remainder of the clue works.
(Other definitions for catty that I've seen before include "Bitchy as a feline" , "Backbiting" , "It's like a queen" , "Spiteful in feline way" , "Malicious" .)