the mind > emotion > anger > irascibility > ill-naturedness > sourness or bitterness of temper > [noun] > sour-tempered person (7)
figurative. A sour-tempered person.
A person of a sour disposition.
A person with a tart or snappy disposition (quot. 1863). More usually (slang), a simpleton, a loser; a person easily deluded or taken advantage of…
(a) a peevish or sour-tempered person; also attributive or as adj.; (b) a boiled sweet with an acid taste.
a sour-faced person; a grumbler; a killjoy; also attributive.