Crossword Genius

Bad reason for being in the bin? (3)

Ross

I believe the answer is:

sin

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

'bad' is the definition.
(thesaurus)

'reason for being in the bin?' is the wordplay.
I cannot really see how this works, but
'in' is within the answer.
A single letter 's' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for sin that I've seen before include "Pride, say" , "grave offence" , "Moral offence" , "Transgress" , "Immoral act" .)

I've seen this clue in the Evening Standard.
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