Meaning & use
unhealthy
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Meanings
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.
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.
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
| comparative | unhealthier |
|---|---|
| superlative | unhealthiest |
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
Which sentence uses 'unhealthy' correctly?
Choose one answer.
'Unhealthy' is an adjective, so it fits after 'was' to describe his weight. Option 0 is wrong because 'unhealthy' doesn't mean 'unhappy'; option 2 uses it as an adverb; option 3 uses it as a noun.
Make it your own
Write a sentence using “unhealthy”, then check it and compare it with the examples above.