Makes up (for) (6)

I think it could be either:

atones

guitar

'makes up for' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for atones that I've seen before include "Makes amends using a stone" , "Makes up for, say sin" , "Makes up for injury or offence" , "Makes amends for sin" , "Makes redress" .)

I've seen this clue in The Star Tribune, the Penny Press, the Newsday and The Washington Post.

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