fret
From LSJ
subs.
See worry. v. trans. Rub away: P. and V. τρίβειν, Ar. and P. κατατρίβειν. Vex: P. and V. δάκνειν, Ar. and V. κνίζειν, τείρειν, Ar. and P. ἀποκναίειν; see vex. V. intrans. P. and V. ἀλγεῖν, βαρύνεσθαι, Ar. and V. τείρεσθαι, κνίζεσθαι, V. θυμοφθορεῖν.