Basic Guidelines For English Spellings
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See US English definition of sour
See UK English definition of sour
See Spanish definition of ácido
1‘too much pulp produces a sour wine’
sweet
2‘milk bottles with traces of sour milk lingering in them’
fresh
3‘a sour old man’
pleasant, amiable
1‘five years of war had soured him’
2‘a dispute soured relations between the two countries for over a year’
improve