PRONE, adjective [Latin pronus.] Bending forward; inclined; not erect. 1. Lying with the face downward; contrary to supine. 2. Headlong; precipitous; inclining in descent. Down thither prone in flight. 3. Sloping; declivous; inclined. Since the floods demand For their descent, a prone and sinking land. 4. Inclined; propense; disposed; applied to the mind or affections, usually in an ill sense; as men prone to evil, prone to strife, prone to intemperance, prone to deny the truth, prone to change.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI