φειστέον

A. one must spare, Isoc. 14.15.

II. one must use sparingly, ἐπαίνου Plu. 2.91a; κλυσμῶν Ruf. ap. Orib. 8.24.31, cf. Archig. ap. Aët. 9.42, Philum.ib.12.