Abandon a lot of mates outside America (5)
I believe the answer is:
waive
'abandon' is the definition.
(I know that waive is a more specific form of the action abandon)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for waive that I've seen before include "pass up" , "Refrain from insisting on right or claim" , "Dispense with, forgo" , "Not insist on (claim)" , "Refrain from insisting on rights" .)