εἰρηναῖος
From LSJ
ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → for extreme diseases, extreme methods of cure, as to restriction, are most suitable (Corpus Hippocraticum, Aphorisms 1.6.2)
English (LSJ)
α, ον,
A peaceful, εἰρηναῖον εἶναί τινι to live peaceably with any one, Hdt.2.68; οὐδὲν εἰ. ἀπαγγέλλειν Th.1.29; τὰ εἰ. matters of peace, Hdt.6.57; εἰ. βίος Phld.Oec.p.20J.; εἰ. καὶ βέβαιος πλοῦς Dion. Byz.24: Sup., Max.Tyr.30.5. Adv. -αίως Hdt.3.145, Phld.Oec. p.39J. II εἰρηναῖον, τό, = Lat. Templum Pacis, D.C.72.24.