Ultroneous
Pronunciation : Ul*tro"ne*ous
Part of Speech : a.
Etymology : [L. ultroneus, from ultro to the further side, on his part, of one's own accord. See Ultra-.]
Definition : Defn: Spontaneous; voluntary. [Obs.] Jer. Taylor. -- Ul*tro"ne*ous*ly, adv. [Obs.] -- Ul*tro"ne*ous*ness, n. [Obs.]
Source : Webster's Unabridged Dictionary, 1913