1. Made dirty or foul
   "breathing air fouled and darkened with factory soot"
   - befouled 
2. Especially of a ship's lines etc
   - afoul, foul

1. Hit a foul ball 
2. Make impure
   - pollute, contaminate 
3. Become or cause to become obstructed
   - clog, choke off, clog up, back up, congest, choke 
4. Commit a foul; break the rules 
5. Spot, stain, or pollute
   - befoul, defile, maculate 
6. Make unclean
   "foul the water" 
7. Become soiled and dirty

See also: dirty, soiled, tangled, unclean

Type of: attaint [archaic], begrime, bemire [archaic], block, change, close up, colly [archaic], dirty, disgrace, dishonor [US], dishonour [Brit, Cdn], grime, hit, impede, jam, obstruct, obturate, occlude, play, shame, soil

Encyclopedia: Foul

• aureate
• Aurelius
• Aureolaria
• Aureolaria pedicularia
• Aureolaria virginica
• aureole
• Aureomycin
• auric
• auricle
• auricula
• auricula atrii
• auricular
• auricular appendage
• auricular appendix
• auricular artery
• auricular point
• auricular vein
• auriculare
• Auricularia
• Auricularia auricula
• Auriculariaceae
• Auriculariales
• auriculate
• auriculated
• auriculoventricular