lut-

(Latin: mud; clay; dirt; filth; mire)

pollute (verb), pollutes; polluted; polluting
1. To make foul or unclean, especially with harmful chemical or waste products: Wastes from the factory near the river had polluted it to a dangerous degree.
2. To make someone morally or spiritually impure: The excessive violence presented in films are believed to pollute the minds of people, especially the younger viewers.
3. Etymology: borrowed from Latin pollutus, polluere,"to soil" or "to defile" from pol-, por-, "before" + luere, "to smear"; related to lutum, "mud". dirty; to soil, befoul.
polluted (adjective), more polluted, most polluted
A reference to something that is unclean or impure; contaminated; tainted: The river in town was the most polluted, filthy, and yucky river Mrs. Black had ever seen and it even smelled extremely foul and nasty, so she and her husband decided to more to another cleaner place far away from the river.
pollution (s) (noun), pollutions (pl)
1. The introduction of harmful substances or products into the environment: People noticed a lot of pollution in the air after the new rubber factory opened in the valley.
2. An undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities: After the river overflowed, a condition of pollution, including junk and rubbish, could be seen on the land when it receded.
3. The act of contaminating, involving (either intentionally or accidentally) unwanted substances or factors: The children unwittingly contributed pollution to the park by dropping candy wrappers on the grass and pathway. 
4. Etymology: from Late Latin pollutionem, pollutio, "defilement"; from Latin polluere, "to soil, to defile, to contaminate"; from por-, "before" + -luere, "to smear".

Related "to lutum, "mud", and to lues, "filth"; comparable to Greek lyma, "filth, dirt, disgrace"; and lymax, "rubbish, refuse".

Making the air unclean with a speech.
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unlute (verbs), unlutes; unluted; unluting
To separate, as things cemented or luted: Mr. Hathaway unluted the old vessel he found by removing the dirt and clay,, and while the pieces fell apart, a clear liquid poured out.

Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; myso-; pedo-; pel-; rhyp-; soil-; sord-; terr-.