Couple in a rush patched things up (8)
I believe the answer is:
repaired
'patched things up' is the definition.
I can't judge whether this defines the answer.
'couple in a rush' is the wordplay.
'couple' becomes 'pair' (synonyms).
'in' is an insertion indicator.
'a rush' becomes 'reed' (plants found by water).
'pair' going inside 'reed' is 'REPAIRED'.
Can you help me to learn more?
(Other definitions for repaired that I've seen before include "Put right - went" , "Retired" , "Restored to good condition" , "Mended, restored" , "Fixed" .)