A rebuke for wearing jeans at the wedding? (8,4)
I believe the answer is:
dressing down
'a rebuke' is the definition.
(dressing down is a kind of rebuke)
'wearing jeans at the wedding?' is the wordplay.
I cannot really understand how this works, but
'wearing' could be 'in' (in jeans or in a dress) and 'in' is present in the answer.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for dressing down that I've seen before include "telling-off" , "Severe scolding (wearing casual clothes?)" , "using low gear?" , "Severe scolding (in old clothes?)" , "rebuke" .)