1. Pouring out; pouring forth freely. [archaic] “Washed with the effusive wave.”
Effusive rocks Geol., volcanic rocks formed by a nonexplosive outpouring of lava in molten or plastic form; in distinction from so-called intrusive, or plutonic, rocks.
-- Ef*fu*sive*ly, adv. -- Ef*fu*sive*ness, n.
adv : in an effusive manner; "the critics praised her effusively"