Synonyms for Befouled:

adj.

all (adjective)
fouled.
dirty (adjective)
unclean.

n.

befouled (noun)
unclean, dirty, fouled, soiled.

v.

dirtied (verb)
streaked, smirched, besmirched, tainted, smeared, muddied, putrefied, soiled, polluted, defiled, contaminated, smudged, stained, tarnished, fouled, Dirtied, sullied.

Other synonyms:

Other relevant words:
unclean, dirty.