adj. & n.
adj. 1 lying face upwards (cf. PRONE). 2 having the front or ventral part upwards; (of the hand) with the palm upwards. 3 inert, indolent; morally or mentally inactive.
n. a Latin verbal noun used only in the accusative and ablative cases, esp. to denote purpose (e.g. mirabile dictu wonderful to relate). supinely adv. supineness n.
[ L supinus, rel. to super: (n.) f. LL supinum neut. (reason unkn.) ]