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.

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