ἐρεθιστέον
From LSJ
Ὁ μὲν βίος βραχύς, ἡ δὲ τέχνη μακρή, ὁ δὲ καιρὸς ὀξύς, ἡ δὲ πεῖρα σφαλερή, ἡ δὲ κρίσις χαλεπή → Life is short, art long, opportunity fleeting, experience misleading and judgment difficult
English (LSJ)
oṇe must irritate, Pl.Ti.89b; one must stimulate bowel-action, Gal.6.413, Aët.4.20, Paul.Aeg.1.34.
Greek (Liddell-Scott)
ἐρεθιστέον: ῥημ. ἐπιθ. τοῦ ἐρεθίζω, δεῖ ἐρεθίζειν, Πλατ. Τίμ. 89Β.