temerario
From LSJ
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
Spanish > Greek
ἔκτολμος, ἀκατάσκεπτος, ἀνδρεῖος, εἰκαιόβουλος, ἀφιλόψυχος, ἁψίμαχος, ἀπτοεπής