spontālis

e, adj.

sponte

I. voluntary (post-class.): parricidium, App. M. 4, p. 147, 25: sobrietas, id. ib. 11, p. 272, 30.—* Adv.: spontālĭter, voluntarily: facere (opp. coactus), Sid. Ep. 8, 9.
Lewis & Short
A Latin Dictionary, 1879
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