κοπτέον
From LSJ
σοφόν γάρ ἕν βούλευμα τάς πολλάς χεῖρας νικᾶ, σὺν ὄχλῳ δ' ἀμαθία μεῖζον κακό → better than many hands is one wise thought, a multitude of fools makes folly worse
English (LSJ)
A one must pound, φάρμακον Asclep. ap. Gal.13.341, cf. 969, Dsc.2.76, Gp.3.7.1.
Greek (Liddell-Scott)
κοπτέον: ῥηματ. ἐπίθετ. τοῦ κόπτω, δεῖ κόπτειν, Κωμικ. παρ’ Ἀθην. 1109F, Γαλην.