pay off in WordNet English dictionary

1. pay someone with influence in order to receive a favor
   buy off  pay off 
   
2. do or give something to somebody in return
   "Does she pay you for the work you are doing?"
   pay  pay off  make up  compensate 
   
3. take vengeance on or get even
   "We'll get them!"; "That'll fix him good!"; "This time I got him"
   pay back  pay off  get  fix 
   
4. eliminate by paying off (debts)
   liquidate  pay off 
   
5. yield a profit or result
   "His efforts finally paid off"
   pay off 
   
6. pay off (loans or promissory notes)
   redeem  pay off 
   

pay off in English Wiktionary