obliquity

noun4

1. •
   The quality of being oblique in direction, deviating from the horizontal or vertical; or the angle created by such a deviation.

   • The Planet Earth, so stedfast though she seem, / Insensibly three different Motions move? / Which else to several Sphears thou must ascribe, / Mov'd contrarie with thwart obliquities — 1667
2. •
   Axial tilt.
3. •
   The quality of being obscure, oftentimes willfully, sometimes as an exercise in euphemism.
4. •
   Mental or moral deviation or perversity; immorality.