Correct spelling for the English word "most unthought" is [mˈə͡ʊst ʌnθˈɔːt], [mˈəʊst ʌnθˈɔːt], [m_ˈəʊ_s_t ʌ_n_θ_ˈɔː_t] (IPA phonetic alphabet).
The phrase "most unthought" is a combination of two words: "most" and "unthought".
The word "most" comes from the Old English word "māst", which means "greatest" or "highest degree". It can also be traced back to the Germanic word "maistaz". In Middle English, it evolved into "moste" before eventually becoming "most" in Modern English.
The word "unthought" is formed by adding the prefix "un-" (meaning "not" or "lack of") to the word "thought". "Thought" originated from the Old English word "thōht", which meant "an act of thinking, consideration, or reflection". It is derived from the West Germanic word "thanht", and akin to the Middle Low German word "gedocht", meaning "thought" or "idea".