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Synonyms

misuse

American  
[mis-yoos, mis-yooz] / mɪsˈyus, mɪsˈyuz /

noun

  1. wrong or improper use; misapplication.

    Synonyms:
    misappropriation, misemployment
  2. Obsolete. bad or abusive treatment.


verb (used with object)

misused, misusing
  1. to use wrongly or improperly; misapply.

  2. to treat badly or abusively; maltreat.

misuse British  

noun

  1. erroneous, improper, or unorthodox use

    misuse of words

  2. cruel or inhumane treatment

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to use wrongly

  2. to treat badly or harshly

  3. to use (something, esp alcohol, drugs, etc) improperly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of misuse

Middle English word dating back to 1350–1400; mis- 1, use

Explanation

Misuse is using something incorrectly or in a harmful way. I warned you that repeated misuse of your cellphone would break it — I can't believe you were texting in the shower! You can use this word as a noun or a verb, with just a slight change in pronunciation. As a noun, misuse rhymes moose. But when you misuse the money your parents gave you for groceries, spending it all on candy and comic books, misuse rhymes with confuse. A less-common meaning of the verb is "treat someone badly."

Keep Reading on Vocabulary.com

Vocabulary lists containing misuse

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Many homes “inappropriately diagnosed residents with schizophrenia to mask the nursing homes’ misuse of antipsychotic drugs and to artificially inflate their star ratings,” it adds.

From MarketWatch • Apr. 7, 2026

“In the quickly expanding universe of cases involving sanctions for the misuse of artificial intelligence, this case is a notorious outlier in both degree and volume,” Clarke wrote.

From Los Angeles Times • Mar. 27, 2026

The results followed a campaign during which videos purporting to show figures close to the Freedom party were caught discussing ways to circumvent lobbying rules or misuse public funds.

From The Wall Street Journal • Mar. 23, 2026

The 19-year-old joins celebrities such as actor Matthew McConaughey who have filed to protect their likeness from AI misuse in recent months.

From BBC • Mar. 20, 2026

There are so many examples of human misuse of the Earth that even phrasing this question chills me.

From "Cosmos" by Carl Sagan