ἐπισυναπτέον
From LSJ
τὸ κακὸν δοκεῖν ποτ' ἐσθλὸν τῷδ' ἔμμεν' ὅτῳ φρένας θεὸς ἄγει πρὸς ἄταν → evil appears as good to him whose mind the god is leading to destruction (Sophocles, Antigone 622f.)
English (LSJ)
A one must subjoin, S.E.M.10.20.
Greek (Liddell-Scott)
ἐπισυναπτέον: ῥημ. ἐπίθ. τοῦ ἐπισυνάπτω, δεῖ ἐπισυνάπτειν, Σέξτ. Ἐμπ. π. Μ. 10. 20.