prone

 
Pronunciation: /prəʊn/

adjective

  • 1 (prone to/to do something) likely or liable to suffer from, do, or experience something unpleasant or regrettable: farmed fish are prone to disease [in combination]: he was written off by many as too injury-prone
  • 2lying flat, especially face downwards: I was lying prone on a foam mattress a prone position
  • technical denoting the position of the forearm with the palm of the hand facing downwards.
  • archaic with a downward slope or direction.

Origin:

late Middle English: from Latin pronus 'leaning forward', from pro 'forwards'