purify

American  

[pyoor-uh-fahy] / ˈpyʊər əˌfaɪ /

verb (used with object)

purified, purifying

1. to make pure; free from anything that debases, pollutes, adulterates, or contaminates.

   to purify metals.

2. to free from foreign, extraneous, or objectionable elements.

   to purify a language.

3. to free from guilt or evil.

4. to clear or purge (usually followed by of orfrom ).

5. to make clean for ceremonial or ritual use.

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verb (used without object)

purified, purifying

1. to become pure.

purify British  

/ ˈpjʊərɪˌfaɪ, ˈpjʊərɪfɪˌkeɪtərɪ /

verb

1. to free (something) of extraneous, contaminating, or debasing matter

2. (tr) to free (a person, etc) from sin or guilt

3. (tr) to make clean, as in a ritual, esp the churching of women after childbirth

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Other Word Forms

• nonpurifying
  adjective
• purification
  noun
• purificatory
  adjective
• purifier
  noun
• repurify
  verb
• self-purifying
  adjective
• unpurified
  adjective
• unpurifying
  adjective

Etymology

Origin of purify

First recorded in 1250–1300; Middle English purifien, from Middle French purifier, from Latin pūrificāre; see pure, -ify

Explanation

To purify something is to remove dirt, chemicals, or anything else that it's contaminated with. You might decide to purify your tap water if it tastes like chlorine. While scientists purify various chemicals during experiments, the substance that people most often purify is water. Water needs to be treated before it's safe to drink, and cities purify the water they send out to people's houses. You can also use the verb purify in a figurative way, to mean "make ritually or religiously clean or pure." This is the word's earliest meaning, from the Latin root purificare, "to make pure."

Example Sentences

In such an environment, it is especially reckless to assume that war, no matter how justified, will somehow purify institutions rather than corrode them.

From The Wall Street Journal • Apr. 5, 2026

The punishments were made after a "systematic review" and were needed "to enforce industry discipline, purify the football environment, and maintain fair competition", the CFA wrote on its official social media account Thursday.

From Barron's • Jan. 29, 2026

"The objective of the liquid separation unit will be to purify cerium on one side, lanthanum on the other side," explains production manager Florian Gouneau as we walk up a flight of metal stairs.

From BBC • Aug. 6, 2025

The pool’s mechanical room looks like the boiler room of an ocean liner — with giant tanks that purify pool water and another system that stabilizes the temperature.

From Los Angeles Times • May 23, 2025

Stagecoaches to and from Philadelphia were stopped; postmasters used tongs to dip mail and newspapers from the city in vinegar and other substances they thought would purify them.

From "An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793" by Jim Murphy

Related Words

• rarefy