desprevenido
From LSJ
δειναὶ δ' ἅμ' ἕπονται κῆρες ἀναπλάκητοι → and after him come dread spirits of death that never miss their mark
Spanish > Greek
ἀπροφύλακτος, ἀπαράσκευος, ἀσύντακτος, ἀπρόβουλος, ἀπρονόητος, ἀπαραφύλακτος, ἀπροσδόκητος, ἀδόκητος, ἀπαρασκεύαστος, ἀφύλακτος