λογικεύομαι
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
A to be merely arguing, πρὸς ἐπίδειξιν Dam.Pr.320, cf. 162.
Greek (Liddell-Scott)
λογῐκεύομαι: κάμνω λογικὸν συμπέρασμα, συλλογίζομαι κατὰ τοὺς κανόνας τῆς λογικῆς, Ἐκκλ. κλ., ἴδε Λοβ. Φρύν. 198.