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.
An undertow is a type of ocean current that is caused by waves breaking on the shore.Most are quite mild and not dangerous, as long as swimmers keep their heads, although some have been known to be powerful enough to sweep swimmers out to sea.ndertows do not pull you under, sort of. An undertow is basically spinning you around like you're in a washing machine. The dangerous undertows form where there is a steep shore, sandy especially, and strong waves crash on it with frequent and relentless regularity.