O / ŏb-ultrōnĕus
adjective gloss

ŏb-ultrōnĕus

fem. ŏb-ultrōnea · neut. ŏb-ultrōneum
voluntary
voluntary, spontaneous: ultroneus, obultroneus, Not. Tir. p. 83: † obultroneus, αὐθαίρετος, Gloss. Philox.