What is the verb form of pollution?

There isn't a single verb form of "pollution" in the English language. "Pollution" is a noun, and it describes the act of making something dirty or impure.

To express the action of polluting, you would use verbs like:

* Pollute: This is the most direct verb form. Example: "The factory is polluting the river."

* Contaminate: This is similar to pollute but often implies a more specific type of contamination, like with harmful chemicals. Example: "The spill contaminated the drinking water."

* Defile: This is a stronger word that suggests making something unclean or morally impure. Example: "The oil spill defiled the coastline."

* Poison: This specifically refers to making something harmful or deadly. Example: "The fumes poisoned the air."

You can also use verbs that describe the process of polluting, like:

* Discharge: This describes releasing waste or pollutants into the environment. Example: "The factory discharges wastewater into the river."

* Emit: This refers to releasing pollutants into the air. Example: "The car emits harmful gases."

* Dump: This implies a large or uncontrolled release of pollutants. Example: "They dumped toxic waste into the ocean."

The best verb to use will depend on the specific context and the type of pollution you are referring to.