sell (sb) out - definition in British English Dictionary & Thesaurus

phrasal verb [M] informal

Definition

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 road transport lobby (= done what these people wanted).

(Definition of sell (sb) out from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

worried or nervous about something that is going to happen

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