πραότης
From LSJ
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
English (LSJ)
ητος, ἡ,
A mildness, gentleness, Th.4.108, Lys.6.34, Isoc.3.55, Pl.R.558a, etc.; opp. ἀγριότης, Id.Smp.197d; opp. ὀργιλότης, Arist.EN1125b26; opp. ὀργή, Id.Rh.1380a6: pl., Isoc.5.116: later πραΰτης, LXX Ps.44(45).4, Ep.Gal.5.23 (v.l.), CIG2788 (Aphrodisias).