II.generally, sharp to the senses:
1.of taste, sharp, pungent, bitter, Hom., Hdt.:—so of smell, Od.
2.of feeling, sharp, keen, ὠδῖνες Il., Soph.
III.metaph.,
1.of things, bitter, cruel, Od., attic
2.of persons, bitter, malignant, Solon., Hdt., attic; πικρὸς θεοῖς hateful to the gods, Soph.; πικρὸς πολίταις Eur.
3.embittered, sorrowing, Soph.