monastery

From Middle English monasterie, from Old French monastere, from Medieval Latin monastērium (“monastery”), from Ancient Greek μοναστήριον (monastḗrion, “hermitage, monastery”), from μοναστήριος (monastḗrios, “alone, made alone”) + -ιον (-ion, “-ium”, suffix forming place names), from μονάζω (monázō, “to be alone”), from μόνος (mónos, “alone”) + -άζω (-ázō, verb-forming suffix). Doublet of minster.

来源：wiktionary