Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary




Synonyms and Antonyms of pollutant

  1. something that is or that makes impure <filtered the pollutants out of the water> Synonyms adulterant, contaminant, contamination, defilement, impurityRelated Words blot, blotch, spot, stain, taint; dirt, filth, grime, muck, scum, sludge, smut, soil; blemish, defect, disfigurement, fault, flaw; abnormality, imperfection, irregularityNear Antonyms clarifier, filter, purifier, refiner; cleanliness, immaculateness, purity

Learn More about pollutant

Seen and Heard

What made you want to look up pollutant? Please tell us where you read or heard it (including the quote, if possible).