: the act of purposely hurting oneself (as by cutting or burning the skin) as an emotional coping mechanism
An acute change in mood that persists for weeks or is associated with thoughts of self-harm should not be ignored.John Williamson

called also self-injury, self-mutilation

self-harm intransitive verb
self-harmed; self-harming; self-harms
teenagers who self-harm

Examples of self-harm in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
On Wednesday, the Senate passed a bulky bill focused on AI regulation that would, among other things, require chatbots that can simulate human-like interactions to include a method for detecting expressions of self-harm or suicidal thoughts, and direct people to mental health resources. Emilia Otte, Hartford Courant, 24 Apr. 2026 Lyons noted Gillum has a history of self-harm. Rebekah Riess, CNN Money, 24 Apr. 2026 Talk to me a little bit about how Santos’ own experience with addiction and self-harm colors her relationship with Langdon. Ct Jones, Rolling Stone, 19 Apr. 2026 Victims targeted worldwide Members of these networks reportedly target vulnerable victims to engage in self-harm, create CSAM, commit acts of animal cruelty, exploit siblings, and, in some cases, encourage suicide attempts, according to the FBI. Doug Myers, CBS News, 17 Apr. 2026 See All Example Sentences for self-harm

Word History

First Known Use

1983, in the meaning defined above

Time Traveler
The first known use of self-harm was in 1983

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Cite this Entry

“Self-harm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/self-harm. Accessed 25 Apr. 2026.

Kids Definition

self-harm

noun
: the act of purposely hurting oneself (as by cutting or burning the skin) as an emotional coping mechanism
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