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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



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verb [transitive] pollute pronunciation in American English /pəˈlut/
Word Forms
present tense
present participlepolluting
past tensepolluted
past participlepolluted
  1. 1
    to make air, water, or land too dirty and dangerous for people to use in a safe way
    The oil spill has polluted the harbor.
    The cattle drank from a river polluted with toxic chemicals.
  2. 2
    to spoil the good character of someone or something
    He was accused of polluting children’s minds.


used to describe foods which don't contain ingredients such as wheat, dairy products etc …

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red market

the buying and selling of human organs

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