Give up and marry before accepting answer (5)
I believe the answer is:
waive
'give up' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for waive that I've seen before include "Refrain from insisting on right or privilege" , "Don't insist on" , "pass up" , "Forgo right or claim" , "Refrain from insisting on rights" .)