(+ to) having a tendency or inclination to something
He was not prone to rashness and precipitate action — Jack London
having the front or lower surface downward: compare supine1 (1a)
lying flat on the ground
(used in combinations) liable to suffer
accident-prone
strike-prone
an accident-prone child
strike-prone industries
archaic sloping downward
pronely adv
proneness noun
[Middle English from Latin pronus bent forward, tending, from pro forwards]