ill

/ɪl/
adjectiveBeginner
formal

Not in good health; sick or unwell

She was too ill to attend the meeting.

He felt ill after eating spoiled food.

💡

Can be used to describe physical or mental illness.

⚖️Law
formal

Morally wrong or unjust

The judge ruled that the defendant's actions were ill and unethical.

The ill intentions behind the policy were clear to everyone.

💡

Used in legal or philosophical contexts to describe actions or intentions.

Collocations

ill at easeuncomfortable or anxiousill-fatedunfortunate or doomedill-temperedbad-tempered or irritable

Synonyms

Antonyms

Related Phrases

ill willphrase
feeling of hostility or resentment
ill windphrase
something that brings trouble or misfortune

💡Pro Tip

Usage Tip

'Ill' is often used in formal contexts, while 'sick' is more common in everyday speech.

Gold Rule

Grammar Rule

'Ill' is an adjective and does not take an '-ly' form when used as an adverb.

📖Word Origin

From Middle English 'ille', from Old English 'eall', meaning 'evil' or 'bad'. The modern sense of 'sick' developed in the 16th century.

📝Usage Notes

The word 'ill' can be used as an adjective or adverb. As an adverb, it means 'badly' or 'unfavorably'.

Word Breakdown

ill
bad or wrong
root
English Dictionary