I'm worried about IT copy (7)

I believe the answer is:

imitate

'copy' is the definition.
(I know that imitate is a kind of copy)

'i'm worried about it' is the wordplay.
'worried' becomes 'ate' (something worrying may eat someone up).
'about' says to put letters next to each other.
'ate' put after 'it' is 'itate'.
'im'+'itate'='IMITATE'

(Other definitions for imitate that I've seen before include "Appear like, in behaviour or appearance" , "Fake" , "I ate Tim! (anag.)" , "Copy (mannerisms)" , "Reproduce" .)

I've seen this clue in The Sun.

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