Crossword Genius

Offend good, and confess (4)

Ross

I believe the answer is:

sing

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

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

'offend good' is the wordplay.
'offend' becomes 'sin' (I am not sure about this - if you are sure you should believe this answer much more).
'good' becomes 'g' (abbreviation).
'sin'+'g'='SING'

'and' acts as a link.

Can you help me to learn more?

(Other definitions for sing that I've seen before include "Make melodious sounds with voice" , "serenade" , "Confess" , "Celebrate" , "Turn informer" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app