espontáneo
From LSJ
ὁ δ' εὖ ἔρδων θεοὺς ἐλπίδι κυδροτέρᾳ σαίνει κέαρ → but he who does well to the gods cheers his heart with a more glorious hope
Spanish > Greek
αὐτόγνωτος, ἐλευθερόγλωσσος, ἐνδιάθετος, ἐλευθέριος, αὐτοφυής, ἐθελούσιος, αὐτενέργητος, αὐτουργός, αὐτόματος, αὐτεπάγγελτος, αὐτοκρατής, ἑκούσιος, αὐτοκέλευστος, ἐθελοντής, αὐθαίρετος, αὐτοκελής, αὐτοσχέδιος