Meaning & use

unhealthy

adjective·Everyday

Last updated

UK/ʌnˈhelθi/
US/ʌnˈhelθi/

Meanings

  1. adjectivecomparable

    Not physically or mentally well; in poor health.

    Grammar: Can be used before a noun or after a linking verb: an unhealthy person; he looks unhealthy.

    Patterns

    • look unhealthy
    • become unhealthy

    He became unhealthy after years of poor diet.

    The unhealthy cat needed to see a vet.

  2. adjectivecomparable

    Likely to cause illness or harm to health.

    Grammar: Used before a noun: unhealthy food; or after a linking verb: the air is unhealthy.

    Patterns

    • unhealthy food
    • unhealthy habits

    Eating too much unhealthy food can lead to weight gain.

    The unhealthy working conditions made many people sick.

  3. adjectivecomparable

    Harmful to mental or emotional well-being.

    Grammar: Often used with 'relationship' or 'environment': an unhealthy relationship.

    Patterns

    • unhealthy relationship
    • unhealthy obsession

    Their unhealthy relationship was full of arguments.

    An unhealthy obsession with winning can cause stress.

Word forms

comparativeunhealthier
superlativeunhealthiest

Common combinations

unhealthy diet
An unhealthy diet can lead to heart problems.
unhealthy lifestyle
He decided to change his unhealthy lifestyle.
unhealthy obsession
She had an unhealthy obsession with cleanliness.
unhealthy competition
Unhealthy competition between departments hurt morale.

Synonyms and how they differ

sick
Sick usually describes a person who is ill, while unhealthy can also describe things like food or habits.
harmful
Harmful means causing damage, often to health; unhealthy is more specific to health and well-being.
unfit
Unfit often means not physically fit, while unhealthy can refer to both physical and mental health.

Opposites

Word family

health noun
The condition of your body and mind.
healthily adverb
In a way that is good for your health.
unhealthily adverb
In a way that is bad for your health.

Practice

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