Those who stay with French priest for peaceful break (4,4)
I believe the answer is:
rest cure
'those who stay' is the definition.
The definition suggests an adverb but the answer is not.
'french priest for peaceful break' is the wordplay.
'french priest' becomes 'cure' (French for 'priest').
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'peaceful break' becomes 'rest' (a rest is taking a break. I am not sure about the 'peaceful' bit.).
'cure' after 'rest' is 'REST-CURE'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for rest cure that I've seen before include "Prolonged period of relaxation as medical treatment" , "Prolonged period in bed for recuperation" , "Treatment involving peace and quiet" , "Freedom from activity as a medical treatment for stress" , "remedy for stress?" .)