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ἐθελοντεί

From LSJ

Sunt verba voces quibus hunc lenire dolorem possis, magnam morbi deponere partem → Words will avail the wretched mind to ease and much abate the dismal black disease.

Horace, Epistles 1.34

Greek (Liddell-Scott)

ἐθελοντεί: ἐθελουσίως, Δίων Κ. 52. 29.

Spanish

espontáneamente, voluntariamente