ῥᾷον ὀμνύναι κἀπιορκεῖν ἢ ὁτιοῦν → they thought less of swearing and perjuring themselves than of anything else in the world
P. κατάστεγος, P. and V. κατηρεφής (Plato, Critias, 116B, but rare P.).
roofed with stone: V. πετρηρεφής.