Definitions

unhealthy

[uhn-hel-thee] / ʌnˈhɛl θi /

ADJECTIVE

sick

Synonyms

STRONGEST

delicate unsound

WEAK

ailing below par debilitated diseased down dragging feeble frail ill in a decline in ill health in poor health infirm invalid laid low out of action out of shape peaked poorly run down shaky sickly unwell weak

Antonyms

STRONGEST

strong

WEAK

good healthy well

ADJECTIVE

very bad in effect on well-being

Synonyms

STRONGEST

corrupt corrupting dangerous degrading detrimental harmful hazardous negative noxious perilous perverse poisonous risky undesirable unsanitary unsound

WEAK

baneful chancy degenerate deleterious demoralizing insalubrious jeopardous morbid nefarious noisome rotten treacherous unhealthful unwholesome villainous virulent wicked

Antonyms

STRONGEST

certain good guarded helpful pure safe secure sound wholesome

WEAK

healthy strong well

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.

There is no single reason why colon-cancer rates have been rising in people younger than 50, but it’s likely driven by increasingly unhealthy diets that lack fiber and over-index on ultraprocessed foods.

From MarketWatch • Jun. 4, 2026

PHW said it highlighted how unhealthy food environments may be driving people to a poorer diet and an increased risk of obesity.

From BBC • Jun. 3, 2026

French fries have long been criticized as an unhealthy food choice, and new research suggests they may deserve that reputation more than other potato dishes.

From Science Daily • Jun. 3, 2026

By late October, Alary realized he needed to sever his unhealthy tie to ChatGPT and AImee.

From The Wall Street Journal • May 23, 2026

Maybe it was the light, but already I looked sallower, unhealthy.

From "Twilight" by Stephenie Meyer

unhealthy

Example Sentences

Related Words