befoul

/bɪˈfaʊl/
verb
  1. To make something dirty, polluted, or impure.
    • The factory was fined for befouling the river with chemicals.
    • Litter can befoul a beautiful park if people are not careful.
    • The oil spill befouled the coastline for miles.
  2. To spoil or ruin something good, such as a reputation or relationship.
    • The scandal befouled the team's proud history.
    • The false rumors befouled his good name in the community.
    • Gossip can befoul friendships if people believe it.
Antonyms
What does "befoul" mean? | whatsthatwordmean | whatsthatwordmean