A person who daubs; someone who paints, coats, or smears things, especially in a crude or unskilled manner; a painter.
From 'daub' plus '-ster' suffix (one who does something, as in 'trickster', 'youngster'). Originally could be insulting (poor painter) but became neutral descriptive term.
The '-ster' suffix is amazing—it turned humble actions into identities, so a daubster is someone whose whole identity is tied to slapping stuff with paint or plaster!
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