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The Collaborative International Dictionary
Ultroneousness

Ultroneous \Ul*tro"ne*ous\, a. [L. ultroneus, from ultro to the further side, on his part, of one's own accord. See Ultra-.] Spontaneous; voluntary. [Obs.]
--Jer. Taylor. -- Ul*tro"ne*ous*ly, adv. [Obs.] -- Ul*tro"ne*ous*ness, n.