Wiktionary
throbbingly
adv. In a throbbing way.
Usage examples of "throbbingly".
He kneeled between her wide-spread knees with his throbbingly erect cock pressed against the back of the seat, and ran his hands wonderingly over the smoothly rounded mounds of her ass.
His groin tightened like a knife twisting as she held her nakedly cool flesh against his own throbbingly hard nakedness under water.
Sucking strongly on the throbbingly erect nipple standing at attention, Eric felt as though he were worshipping at the shrine .