Washability- The ability of a paint to be easily cleaned without wearing away.

Washing- Erosion of a paint film after rapid chalking.

Water Spotting- Defective appearance of the paint surface that is caused by water droplets.

Weathering- Paint film deterioration as a result of exposure to the weather.

Wet Edge- The length of time during which a paint can be brushed before it becomes too dry to flow out and blend together.

Wrinkling- Ridges and furrows that develop in a paint film when the paint dries.