Answer: bubbling

AnswerCrossword Clue
bubbling(of a liquid) Contain bubbles of air or gas rising to the surface
bubblingMake a sound resembling this
bubbling(of a person) Be exuberantly filled with an irrepressible positive feeling
bubbling(esp. of a negative feeling) Become more intense and approach the point of being vehemently expressed
bubblingBUBBLE, to form a globule of liquid blown out with gas