Vicious refers to being savage or cruel.
- The mean dog displayed vicious behavior toward the jogger.
Viscose refers to a thick organic liquid used for making rayon and cellophane.
- The dress uses a 100-percent viscose fabric for a light, cool feel.
Viscous refers to a thick or gummy liquid that is hard to pour.
- Typical viscous liquids are molasses, honey, oil, and syrup.