Synonyms for Lowbrow:

adj.

all (adjective)
uncultivated, lowbrowed.
barbarian (adjective)
uncultivated, philistine.

n.

evident, apparent, straightforward, make sense, clear-cut, simple, manifest, easy, understandable, intelligible. lowbrow (noun)
lowbrowed, nonintellectual, uncultivated, philistine.

Other synonyms:

Other relevant words:
simple.