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.

At the time, he used smokers as an example of who should lose access, no doubt because smoking is a widely unpopular and indisputably unhealthy behavior.

From Salon • May 18, 2026

Repeated weight loss followed by weight regain, often called "yo-yo dieting" or weight cycling, has long been viewed as unhealthy and potentially even worse than staying overweight.

From Science Daily • May 17, 2026

The Obesity Health Alliance, a co-alition of 70 charities and health organisations, wants the government to act more decisively against the promotion of unhealthy food and drinks.

From BBC • May 16, 2026

This is the power of public prohibitions of unhealthy behavior.

From Slate • May 15, 2026

He was as ragged as a rock star, but his missing teeth and the unhealthy pallor of his skin spoke eloquently of a life of privation and despair.

From "The God of Small Things" by Arundhati Roy

unhealthy

Example Sentences

Related Words