(idiomatic) A negative aspect to something mostly positive.

Nyssa sylvatica (black tupelo) / Nyssa aquatica (water tupelo)

Synonym of propolis

Synonym of for toffee (“at all, especially of a skill or ability”)

Lactofermented pickled corn, a dish eaten in the Southern United States, especially in Appalachia. / Used other than figuratively or idiomatically: see sour, corn: tart and/or spoiled corn.

plural of sour gourd

The baobab tree.

plural of sour puss

plural of soured cream

Archaic spelling of sauerkraut.