Webster's 1828 Dictionary
PRONENESS
n.The state of bending downwards; opposed to the erectness of man. 1. The state of lying with the face downwards; contrary to supineness.
2. Descent; declivity; as the proneness of a hill.
3. Inclination of mind, heart or temper; propension; disposition; as the proneness of the Israelites to idolatry; proneness to self-gratification or to self-justification; proneness to comply with temptation; sometimes in a good sense; as; the proneness of good men to commiserate want.
Webster's 1913 Dictionary
PRONENESS
PRONENESS Prone "ness, n.
1. The quality or state of being prone, or of bending downward; as, the proneness of beasts is opposed to the erectness of man.
2. The state of lying with the face down; -- opposed to supineness.
3. Descent; declivity; as, the proneness of a hill.
4. Inclination of mind, heart, or temper; propension; disposition; as, proneness to self-gratification.
New American Oxford Dictionary
proneness
prone ness |ˈprōnˈnis ˈproʊnnəs | ▶noun liability to suffer from or experience something regrettable or unwelcome; susceptibility: his proneness to injury will seriously mar a promising career.
Oxford Dictionary
proneness
prone |ness |ˈprəʊnnɪs | ▶noun [ mass noun ] liability to suffer from or experience something disagreeable; susceptibility: his proneness to injury will seriously mar a promising career.
Oxford Thesaurus
proneness
proneness noun her proneness to anxiety: susceptibility, liability, tendency, inclination, disposition, predisposition, vulnerability, openness, propensity, proclivity; Homeopathy miasm.
The Wordsmith Dictionary