unhealthy

adjective

un·​healthy ˌən-ˈhel-thē How to pronounce unhealthy (audio)
unhealthier; unhealthiest
1
: not conducive to health : not healthful
an unhealthy climate
unhealthy habits
unhealthy foods
2
: not in good health : sickly, diseased
unhealthy animals
3
a
: risky, unsound
an unhealthy economy
b
: of a harmful nature : bad, injurious
unhealthy levels of lead
c
: morally contaminated : corrupt, unwholesome
an unhealthy imagination
unhealthily adverb
unhealthiness noun

Examples of unhealthy in a Sentence

Her skin looks blotchy and unhealthy. Tests revealed an unhealthy level of lead in the water. Eating honey can be unhealthy for babies. He was stuck in an unhealthy relationship. She has an unhealthy interest in natural disasters.
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.
Borgman chronicles how the show focused on entertainment over health and how contestants were belittled and encouraged to follow unhealthy weight loss methods, including consuming caffeine pills. Addie Morfoot, Variety, 15 Aug. 2025 In particular, lawsuits have alleged that child users with developmental disabilities and mental health issues have formed unhealthy attachments to chatbots that have influenced the children to become violent, begin self-harming, or, in one disturbing case, die by suicide. Ashley Belanger, ArsTechnica, 14 Aug. 2025 If visibility drops to less than 5 miles, the smoke has reached unhealthy levels. Lauren Penington, Denver Post, 14 Aug. 2025 Damage to the unhealthy leaves and bugs caught on a yellow sticky card trap are telltale signs. Andy Wilcox, Better Homes & Gardens, 14 Aug. 2025 See All Example Sentences for unhealthy

Word History

First Known Use

1595, in the meaning defined at sense 1

Time Traveler
The first known use of unhealthy was in 1595

Browse Nearby Words

Cite this Entry

“Unhealthy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unhealthy. Accessed 21 Aug. 2025.

Kids Definition

unhealthy

adjective
un·​healthy ˌən-ˈhel-thē How to pronounce unhealthy (audio)
1
: not conducive to good health : not healthful
an unhealthy climate
2
: not in good health : sickly, diseased
3
a
: risky, unsound
an unhealthy economy
b
unhealthily adverb
unhealthiness noun

Medical Definition

unhealthy

adjective
un·​healthy -ˈhel-thē How to pronounce unhealthy (audio)
unhealthier; unhealthiest
1
: not conducive to health
an unhealthy climate
2
: not in good health : sickly
unhealthiness noun

More from Merriam-Webster on unhealthy

Last Updated: - Updated example sentences
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