ebullience

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.

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.