The spelling of the word "most impregnant" can be confusing, but it follows the standard rules of English spelling. The word "most" is spelled exactly as it sounds, with the "o" pronounced as a short "o" sound and the "st" pronounced as an "st" sound. "Impregnant," on the other hand, is a less common word and may not be familiar to some. It is spelled with an "i" pronounced as a short "i" sound, followed by a "p" sound, an "r" sound, an "e" pronounced as a short "e" sound, and a "g" sound, followed by an "n" sound and a "ant" pronounced as an "ant" sound. The IPA transcription of "most impregnant" is /moʊst ɪmˈprɛɡnənt/.