φθείρω Root ΦΘΕΡ, ΦΘΑΡ fut mid in passive sense
I.to ruin, waste, spoil, destroy, Lat. perdere, Od., Hdt., etc.:—Pass. to go to ruin, perish, Trag., etc.
II.Pass., (.] φθείρεσθε (as a curse) may ye perish! ruin seize ye! Il.; φθείρου plague take thee! away with thee! Lat. abi in malam rem! Ar.; so, εἰ μὴ φθερεῖ if thou depart not . . , Eur.; c. gen., φθείρεσθε τῆσδε off from her! i. e. unhand her, let her go, id=Eur.; φθείρεσθαι πρός . . to run headlong to . . , Dem.
2.to have suffered loss from shipwreck, Eur.