Synonyms of ill
41 similar words · 7 opposite words
Another word for ill is unhealthy. Other synonyms of ill are sickly, infirm, indisposed and tumid. The opposite of ill is well.
Synonyms and similar words for ill
adjectiveNauseated; having an urge to vomit.
adjectiveSublime, with the connotation of being so in a singularly creative way.
- dopeAmazing; cool.
adjectiveBad-tempered.
- diseasedAffected with or suffering from disease.
- poorly UKIll, unwell, sick.
- under the weather informalIll or gloomy, especially from a cold or flu.
- unwellNot in good health; not feeling well; somewhat ill.
- ailingSickly; sick; ill; unwell.
adverbNot well; imperfectly, badly.
- illyBadly; poorly.
adjectiveMore synonyms
- crank UK
- crook slangIll, sick.
- green about the gillsIll or unwell, especially as indicated by one's appearance.
- ickyUnwell or upset; in a bad state of mind or health.
- indisposedMildly ill.
- infirmWeak or ill, not in good health.
- like death warmed overIll, unwell.
- lousyUnwell; under the weather.
- off one's feed
- on the Pat and Mick slangSick; out of commission due to being unwell.
- out of sorts
- Pat and Mick slangSick.
- punkPoorly, sickly.
- puny US(Frequently) ill; poorly, sickly.
- ropyOf poor quality; in poor health.
- rough slangSomewhat ill; sick; in poor condition.
- sickishSomewhat sick, but not seriously so.
- sicklyFrequently ill or in poor health; weakly.
- sick as a dogVery ill.
- sick as a parrotExtremely sick; very ill.
- tumidCancerous, unhealthy.
- unhealthySick or ill.
- valetudinarianSickly, infirm, of ailing health; related to ill health.
- valetudinarySickly, infirm, valetudinarian.
- maladive rareSick; ill.
- mawkish archaic
- queer dated
Opposite of ill
adjectiveAntonym(s) of “suffering from a disease”.
adjectiveAntonym(s) of “bad”.
adjectiveAntonym(s) of.
- wackAnnoyingly or disappointingly bad, in various senses; lousy, corny, cringy, uncool, messed up.
Meaning of ill
- adjective Evil; wicked (of people).
- adjective Morally reprehensible (of behaviour etc.); blameworthy.
- adjective Indicative of unkind or malevolent intentions; harsh, cruel.
ill in other languages
Questions about synonyms of ill
Source and license
Adapted from Wiktionary: ill (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of ill.” Word.ws, https://word.ws/synonyms/ill. Based on Wiktionary, CC BY-SA 4.0.