πηροῦν

From LSJ

τέχνη δὲ ἄνευ ἀλκῆς οὐδὲν ὠφελεῖ (Thucydides 2.87.4.6) → η τέχνη απαιτεί κουράγιο, skill without heart is useless

Source

Greek > English (Woodhouse Verbs Reversed)

cripple (see also: πηρῶ, πηρόω)