παλίμφημος
From LSJ
πάντων χρηµάτων µέτρον ἐστίν ἄνθρωπος, τῶν µέν ὄντων ὡς ἐστιν, τῶν δέ οὐκ ὄντων ὡς οὐκ ἔστιν → man is the measure of all things, of things which are, that they are, and of things which are not, that they are not (Protagoras fr.1)
English (LSJ)
Dor. πᾰλίμ-φᾱμος, ον,
A back-speaking, recanting, π. ἀοιδά, = παλινῳδία, a song of recantation, reproaching the male sex instead of the female, E.Ion 1096 (lyr.), cf. Med.415 sq. II = κακόφημος, δύσφημος, λαβροσύναι Tryph.423, cf. Hsch.; π. εὐχαί Ph.2.301; ὄναρ ib.55.