πεῖ
From LSJ
Χρηστὸς πονηροῖς οὐ τιτρώσκεται λόγοις → Non vulneratur vir bonus verbo improbo → Ein böses Wort verwundet keinen guten Mann
English (LSJ)
τό, name of the letter π,
A v. Π :—later πῖ, Sch.D.T.p.489 H., etc.
πεῖ, Dor. Adv.
A where? Sophr.5 :—indef. πει, anywhere, SIG527.126 (Dreros, iii B. C.).