Crossword Genius

Exciting, unappetising habit? (4-6)

Ross

I believe the answer is:

nail-biting

I'm a little stuck... Click here to teach me more about this clue!

This clue might be a double definition.

'exciting' is the first definition.
(I've seen this before)

'unappetising habit?' is the second definition.
'nail biting' can be an answer for 'habit?' (I have seen 'Bad habit' mean 'nail biting' so perhaps 'habit' could also mean 'nail biting'). I'm not sure about the 'unappetising' bit.

Can you help me to learn more?

I've seen this clue in The Telegraph.
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