πράϋνσις
From LSJ
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
English (LSJ)
[ᾱ], εως, Ion. πρήϋνσις, ἡ,
A softening, appeasing, Arist. Rh.1380a8: Medic., relief, Aret.CA2.11 (pl.).