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English definition of “sour”

sour

adjective     /saʊər/
TASTE B1 having a sharp, sometimes unpleasant, taste or smell, like a lemon, and not sweet: These plums are a bit sour.Flavours and tastesSmells and smelling
UNFRIENDLY very unfriendly or unpleasant: Their relationship suddenly turned sour.Not being friendlyNot saying muchBlunt and direct in speech and behaviourBad-tempered
(Definition of sour adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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