ἀντιθετικός
From LSJ
Καὶ τῶν λεγόντων εὖ καλὸν τὸ μανθάνειν → It is a fine thing to learn from those who speak well
English (LSJ)
ή, όν,
A setting in opposition, contrasting, ἀ. δύναμις φαινομένων τε καὶ νοουμένων S.E.P.1.8; antithetical, Eust.1325.19; ἀντιθετικά, τά, D.21 Arg.ii9; ἀ. στάσις Hermog.Stat.4, al. II contrasted, correspondent, of poems in which a number of κῶλα are repeated in reversed order, Heph. Poëm.4.6.