supinely

adjective

1. lying on the back, face upward
2. with the palm upward or away from the body: said of the hand
3. Old Poet. leaning or sloping backward
4. mentally or morally inactive; sluggish; listless; passive

Origin: L supinus, prob. akin to sub-: see sub-

noun

1. a Latin verbal noun formed from the stem of the past participle and having only an accusative and an ablative form
2. an infinitive in English preceded by to