εὐθῡμ-ία,ἡ,
A. cheerfulness, contentment, Pi. I. 1.63 , Pae. 1.2 , B. 16.125 , X. Cyr. 4.5.7 , Philem. 96.4 , Men. 231 , etc.: in pl., Pi. O. 2.34 , X. Cyr. 1.3.12 , Arist. Pr. 954a25 ;περὶ εὐθυμίης, title of works by Democritus and Hipparchus Pythagoreus.
II. Εὐ. personified, Pi. Fr. 155 , Memn. 4.2 , LW 45 (Erythrae).