παλιντριβής
From LSJ
Ἡ γὰρ σιωπὴ μαρτυρεῖ τὸ μὴ θέλειν → Hominem non velle significat silentium → Das Schweigen zeugt davon, dass der, der schweigt, nicht will
English (LSJ)
ές,
A rubbed again and again, of the ass, obstinate, resisting all blows, Semon.7.43. 2 knavish, crafty, τὰ . . πανοῦργα καὶ π. S.Ph.448.