πικρὸν με ἀπαιτεῖς ἐνοίκιον → you ask too much of me, you demand a bitter rent from me
atquīn, forme postérieure de atqui : [mss] Pl. Rud. 760 ; Cic. Phil. 10, 17 ; Tusc. 2, 43.
atquin CONJ :: but, yet, notwithstanding, however, rather, well/but now; and yet, still
at-quīn, spät. Nebenf. für atqui, w. s.