Merriam-Webster Collegiate Dictionary - inclination

 noun  Date: 14th century  1.  a. obsolete natural disposition ; character  b. a particular disposition of mind or character ; propensity; especially liking had little ~ for housekeeping  2. an act or the action of bending or inclining: as  a. bow, nod  b. a tilting of something  3.  a. a deviation from the true vertical or horizontal ; slant; also the degree of such deviation  b. an inclined surface ; slope  c.  (1) the angle determined by two lines or planes  (2) the angle made by a line with the x-axis measured counterclockwise from the positive direction of that axis  4. a tendency to a particular aspect, state, character, or action the clutch has an ~ to slip  • ~al adjective