ἡ γὰρ σιωπὴ μαρτυρεῖ τὸ μὴ θέλειν → silence is evidence of unwillingness (Menander)
rŏtātĭo: ōnis, f. id.,I a wheeling or turning about in a circle, rotation: circini, Vitr. 10, 3 init. et fin.