ἀναβάδην
From LSJ
Ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → Sile, melius vel loquere silentio → Was besser ist als Schweigen, sage oder schweig
English (LSJ)
[βᾰ], Adv., (ἀναβαίνω) lit.
A going up, but usu. with one's feet up, lying down, Ar.Pl.1123, D.Chr.62.6, Plu.2.336c, cf. Ath.12.528f, Poll.3.90; so prob. in Ar.Ach.399,410, but expl. by a Sch. as upstairs.