Wiktionary
buy off
vb. (context transitive English) to pay off, convince to refrain etc. by corrupt payment or other service
WordNet
buy off
v. pay someone with influence in order to receive a favor [syn: pay off]
Usage examples of "buy off".
He could buy off the crew with one pearl apiece from the necklace and send the kids home somehow.
Clare was good-natured and self-indulgent, and sought to buy off with presents and flatteries.
An old Conch fixer like yourself, and the best you can do is buy off some jock from the local high school.
The pics were obviously the surveillance shots Ed Satterlee was trying to buy off a rival clearance group.
Even Pol, and his putative French accomplices, couldn't buy off Washington.
Miriam Bancroft trying to buy off her husband's investigator with illegal sexual favours.