ἔσονται οἱ δύο εἰς σάρκα μίαν → they will become one flesh
careless: P. and V. ῥᾴθυμος; use heedless.
imprudent: P. and V. ἀσύνετος, ἄβουλος, P. ἀλόγιστος, V. κακόφρων (Eur., Iphigenia in Aulis 391); see rash.
inconsiderate: P. and V. ἀγνώμων.
light-hearted: V. κουφόνους.