espontáneamente
From LSJ
πολλὰ δ' ἄναντα κάταντα πάραντά τε δόχμιά τ' ἦλθον → and ever upward, downward, sideward, and aslant they went
Spanish > Greek
αὐθόρμητος, ἔμψυχος, ἀδίδακτος, ἐνδιάθετος, αὐτοματισμός, αὐτοφυής, ἀποίητος, ἐθελούσιος, ἑκούσιος, ἐθελοντής, ἀκατάσκευος, ἐθελοντί, ἐθελοντηδόν