graffiti; scrawl; poor calligraphy; to write badly; to scribble

paint

to paint; to smear; to apply (makeup etc); to doodle; to erase; to obliterate

to edit (a text); to revise (a manuscript)

to obliterate (some words, or part of a picture etc) using correction fluid, ink, paint etc; to paint out; to paint over

muddled; silly; confused

muddled and completely collapsing (idiom); in an awful condition; complete shambles; a total mess

dotard

confused; vague; indistinct; muddle-headed; mixed up; in a daze

tidal marsh; shoal; shallows