μεγᾰλο-ψῡχία · megalo-psychia — LSJ
greatness of soul, high-mindedness, lordliness, Democr. 46, Isoc. 9.59, Arist. EN 1107b22, 1123a34, Plb. 10.40.6, etc.; μ. τῶν ἔργων D. 23.205, cf. D.S. 1.58; generosity, πρός τινας IG 2(2).1326.25: pl., Plb. 1.64.5.
in bad sense, arrogance, D. 18.68, v.l. in Luc. Tim. 28.
Quixotism, Pl. Alc. 2.150c.