6
muddy(verb, dull, dirty, foul, stain)
6
profane(verb, abuse, catch, harm, insult)
6
smudge(verb, dull, attack, hurt, catch)
5
desecrate(verb, abuse, catch, harm, spoil)
5
infect(verb, foul, soil, pollute, contaminate)
5
mess up(verb, expression, phrasal verb, disorder, ruin)
5
spatter(verb, attack, clean, dirty, foul)
5
violate(verb, abuse, spoil, insult, corrupt)
4
adulterate(verb, corrupt, foul, taint, soil)
4
denigrate(verb, attack, ruin, criticize, clean)
4
poison(verb, foul, soil, pollute, contaminate)
4
slander(verb, dull, hurt, ruin, criticize)
4
smirch(verb, dirty, uncleanness)
3
abuse(verb, criticize, spoil, insult, corrupt)
3
blight
3
blot(dull, hurt, dirty, corrupt, stain)
3
injure(dull, criticize, foul, stain, taint)
3
pervert(verb, abuse, harm, insult, corrupt)
3
spoil(verb, dull, hurt, ruin, abuse)
3
vitiate(verb, dull, corrupt, stain, debase)
11 years ago|5.6k views|share |citing 
APASmart Define. (2015). befoul thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/befoul/thesaurus/synonyms
ChicagoSmart Define. 2015. "befoul thesaurus" https://smartdefine.org/befoul/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, befoul thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/befoul/thesaurus/synonyms>.
MLASmart Define. "befoul thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/befoul/thesaurus/synonyms>