Catch cold, causing great anxiety (4-6)

I believe the answer is:

nail-biting

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

'great anxiety' is the definition.
'nail biting' can be an answer for 'anxiety' (I've seen this before). I'm unsure of the 'great' bit.

'catch cold' is the wordplay.
'catch' becomes 'nail' (nail can mean to catch or arrest).
'cold' becomes 'biting' (similar in meaning).
'nail'+'biting'='NAIL-BITING'

'causing' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.