This page deals with slang terms for a Zombie apocalypse, in the heat of the moment it's easy to garble in horror at the situation and important messages are lost so easy terms are introduced by the military which are inevitably adopted and mutated by civilians.
In art, an underpainting is an initial layer of paint applied to a ground, which serves as a base for subsequent layers of paint. Underpaintings are often monochromatic and help to define colour values for later painting.
Working wet-on-wet with color for an underpainting rather than white seems so much more advantageous. -- Painter421. Answer: Starting a painting with a layer of Liquid White is part of the Bob Ross Wet-on-Wet TechniqueÂ®. It's neither better nor worse than any other painting technique, and has its place in art. Myself, I really love the richness you get with a good, well done underpainting, but that takes more time.