Inclination

Noun

1. A physical tilt or bend.

   "The inclination of his head increased and he awoke with a start."

2. A slant or slope.

   "The road up to the house had a steep inclination."

3. A tendency.

   "His inclination to drink escalated to alcoholism."

4. The angle of intersection of a reference plane.

   "The astronomer calculated the inclination of the equator or ecliptic of Earth and the orbital planes of each visible heavenly body."

5. A person or thing loved or admired.