Fancying a nibble, like a kiss? (7)
I believe the answer is:
peckish
'fancying a nibble' is the definition.
I can't tell whether this defines the answer.
'like a kiss?' is the wordplay.
I cannot quite see how this works, but
'like' could be 'ish' (similar in meaning) and 'ish' is found within the answer.
'kiss?' could be 'peck' (pecking is a kind of kissing) and 'peck' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for peckish that I've seen before include "Somewhat hungry" , "Rather hungry (colloq.)" , "Wanting something to eat" , "A little hungry" , "ready for dinner?" .)