The spelling of the word "retuch" is incorrect. The correct spelling is "retouch", which is pronounced as /riːˈtʌtʃ/. The IPA phonetic transcription of the word is essential to understand its pronunciation correctly. The word means to improve or enhance the quality of a photograph, painting, or other images by making slight alterations. While it is necessary to use correct spelling, using the correct pronunciation is equally important to avoid confusion and misinterpretation of what is being said.