Learn the meaning, pronunciation, and usage of the word ill, which can be an adjective, noun, or adverb. Find out the difference between ill and its homophone well, and explore its synonyms, antonyms, and idioms. Learn the meaning, pronunciation and usage of the adjective ill, which can mean suffering from an illness or disease, or bad or harmful. See examples, idioms, collocations and word origin of ill. ILL is a realistic first-person action horror game that takes you into a dark fort overtaken by a mysterious entity. Unpredictable monsters, a visceral disme... Ill and sick are both adjectives that mean ‘not in good health’. We use both ill and sick after a verb such as be, become, feel, look or seem: … He treated her very ill. I realize one shouldn't speak ill of the dead. This weather bodes ill for the garden party tonight. We can ill afford to lose another member of staff. I wish her no ill.
