ebul·lient \-nt\adjective Etymology: Latin ebullient-, ebulliens, present participle of ebullire to come bubbling out, from e- + bullire to bubble, boil, from bulla bubble — more at poll (head) 1.: boiling, agitated < indicates the presence of ebullient internal energy — E.A.Armstrong > 2.: characterized by ebullience < three acts of ebullient breezy music — C.M.Smith > • ebul·lient·lyadverb