Supine /(sū̇*pīn")/

Su·pine

Supine

a.
  1. Lying on the back, or with the face upward; -- opposed to prone.
  2. Leaning backward, or inclining with exposure to the sun; sloping; inclined.
    If the vine On rising ground be placed, or hills supine.
  3. Negligent; heedless; indolent; listless.
    He became pusillanimous and supine, and openly exposed to any temptation.

Supine

n.
  1. A verbal noun; or (according to C.F.Becker), a case of the infinitive mood ending in -um and -u, that in -um being sometimes called the former supine, and that in -u the latter supine. (Lat. Gram.)