ebullience

A boiling or bubbling up; an ebullition.

In conversation, doubtless, you may observe him [Samuel Johnson], on occasion, fighting as if for victory;—and must pardon these ebulliences of a careless hour, which were not without temptation and provocation.

Now an irresistible agent like this [heat] is everywhere at work in the ranges of creaturehood. It lights the stars as its jets. It bulbs the sun body with its ebullience. None the less, it tints the delicate grass blades and flower petals.

The quality of enthusiastic or lively expression of feelings and thoughts.

Sophia did not ſee his Behaviour in ſo very diſadvantageous a Light, and was perhaps more pleaſed with the violent Raptures of his Love [...] than ſhe was offended with the reſt; and indeed ſhe imputed the whole to the Extravagance, or rather Ebullience, of his Paſſion, and to the Openneſs of his Heart.

[H]is friend, with great ebullience of paſſion, many praiſes of his own good play, and many maledictions on the power of chance, took up the cards, and threw them into the fire.