Find another word for improvement. Find another word for enhance. Antonyms for improvement. What are synonyms for improved? 34 synonyms of developed from the Merriam-Webster Thesaurus, plus 118 related words, definitions, and antonyms. Find more opposite words at wordhippo.com! What is the opposite of Improve? Find more ways to say better, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. Synonyms for improve in Free Thesaurus. Antonyms for improved. Antonyms for improve include impair, deteriorate, ruin, diminish, disimprove, decrease, hinder, recede, reduce and lessen. Antonyms for Improve (opposite of Improve). These antonyms of the word improve are provided for information only. Find another word for developed. 26 synonyms of enhance from the Merriam-Webster Thesaurus, plus 58 related words, definitions, and antonyms. See more. Antonyms for improve. Synonyms for improved in Free Thesaurus. Find more ways to say improved, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. 1 antonym for improved: unimproved. Fast is an antonym of slow. Synonyms-thesaurus.com is more than 70,800 synonyms and 47,200 antonyms available. Synonyms for improvement in Free Thesaurus. Antonym definition, a word opposite in meaning to another. 5 synonyms of improvement from the Merriam-Webster Thesaurus, plus 34 related words, definitions, and antonyms. Improvement: an instance of notable progress in the development of knowledge, technology, or skill. Another word for improved. Another word for better. Here you use the antonyms for improve.