Rough-like or just plain rough.
a : something in a crude, unfinished, or preliminary state
See also: a diamond in the rough.
EDIT: After reading OP's edits I thought to look up boorish. While that doesn't seem to fit exactly, I thought this synonym discussion on the page was interesting:
boorish, churlish, loutish, clownish mean uncouth in manners or
boorish implies rudeness of manner due to insensitiveness
to others' feelings and unwillingness to be agreeable .
churlish suggests surliness, unresponsiveness, and
loutish implies bodily awkwardness
together with stupidity .
clownish suggests ill-bred
awkwardness, ignorance or stupidity, ungainliness, and often a
propensity for absurd antics .