0 to not do what you have promised someone you will do or what you should do because you will get more advantages for yourself if you do something else:
French farmers feel they've been sold out by their government in the negotiations.
They've sold out to the oil lobby (= done what these people wanted).
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
sell (sb) out