mental health

noun

1
: the condition of being sound mentally and emotionally that is characterized by the absence of mental illness and by adequate adjustment especially as reflected in feeling comfortable about oneself, positive feelings about others, and the ability to meet the demands of daily life
also : the general condition of one's mental and emotional state
2
: health care dealing with the promotion and improvement of mental health and the treatment of mental illness
—often used before another noun
mental health professionals
a mental health clinic

Examples of mental health 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.
The Mayo Clinic defines the mental health condition as typically marked by hallucinations, delusions, depression, and mania. — Leigh Blickley, Entertainment Weekly, 29 Sep. 2026 The Perez Hilton Team & Family For resources on mental health, visit here. — Chris Gardner, HollywoodReporter, 29 Sep. 2026 The couple left the UK for the US in 2020 after stepping down as working royals, and part of the reasoning behind it was Meghan’s mental health and the constant tabloid attention in the UK. — Stylecaster Editors, StyleCaster, 29 Sep. 2026 There was no showing of those photos that every doc that’s ever been about her has shown of the incident with the umbrella and her own mental health crisis. — Marlow Stern, Variety, 29 Sep. 2026 See All Example Sentences for mental health

Word History

First Known Use

circa 1650, in the meaning defined at sense 1

Time Traveler
The first known use of mental health was circa 1650

Browse Nearby Words

Cite this Entry

“Mental health.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mental%20health. Accessed 5 Oct. 2026.

Medical Definition

mental health

noun
1
: the condition of being sound mentally and emotionally that is characterized by the absence of mental illness and by adequate adjustment especially as reflected in feeling comfortable about oneself, having positive feelings about others, and being able to meet the demands of daily life
also : the general condition of one's mental and emotional state
Finding the flexibility and balance that is required for good mental health is a challenge we all face. —Christy Turlington, Psychology Today
2
: health care dealing with the promotion and improvement of mental health and the treatment of mental illness : mental hygiene
—often used before another noun
mental health professionals
a mental health clinic
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