The spelling of the phrase "most wettish" is pretty straightforward once you understand the pronunciation. In IPA phonetic transcription, it would be /məʊst ˈwɛtɪʃ/. The word "most" is pronounced with a long "o" sound, while "wettish" includes the "t" and "sh" sounds. Combined, they create a word that describes something that is quite wet, but not completely soaked. This word is not commonly used in everyday conversation, but can be found in some technical or scientific writing.