supinely

adv

1. in a supine way, with the head facing up

   “Giddy and intoxicated as I was with such satiating draughts of pleasure, I still lay on the couch, supinely stretched out, in a delicious languor diffus'd over all my limbs”

   ““In the jungle one would scarcely stand supinely aside while another took his mate. It is a silly world, an idiotic world, and Tarzan of the Apes was a fool to renounce the freedom and the happiness of his jungle to come into it.””