Di abandons hazy intuition (8)
I believe the answer is:
instinct
'intuition' is the definition.
(I've seen this before)
'di abandons hazy' is the wordplay.
'abandons' suggests deleting specific letters.
'hazy' becomes 'indistinct' ('indistinct' can be similar in meaning to 'hazy').
'indistinct' with 'di' taken out is 'INSTINCT'.
(Other definitions for instinct that I've seen before include "Intuition, sixth sense" , "Gut reaction, impulse" , "Natural aptitude" , "Innate behavioural pattern" , "Flair" .)