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sour on

B2 informal inseparable transitive
In simple words

To start feeling bad about or disappointed in something you used to like.

Literal meaning: To go sour (become unpleasant) toward something — the figurative leap is clear.

Meanings

1 B2 idiomatic neutral

To become disillusioned, cynical, or negative about something that was once seen positively.

"Many voters have soured on the administration after a series of broken promises."

Grammar: inseparable
2 B2 idiomatic informal

To lose trust or affection for a person due to disappointing behaviour.

"She had completely soured on him after discovering he had lied to her."

Grammar: inseparable
Usage notes

Common in American journalism and commentary. Often describes a gradual disillusionment with a person, idea, or institution. Frequently appears in political and business contexts.

Commonly used with

idea politics relationship investment deal plan candidate

Forms

Base
sour on
I/you/we/they
3rd person
sours on
he/she/it
Past simple
soured on
yesterday
Past participle
soured on
have + pp
-ing form
souring on
continuous

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Synonyms

go off become disillusioned with cool on lose faith in turn against fall out of love with

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