The phrase "haddest notion" is spelled using Middle English spelling conventions. The word "haddest" is the second person singular past tense form of the verb "have," and "notion" means a vague or imperfect idea. In IPA phonetic transcription, "haddest" is pronounced /ˈhædɪst/, with a hard "h" sound, the "a" pronounced as in "cat," and the "d" pronounced with a slight "t" sound at the end. "Notion" is pronounced /ˈnoʊʃən/ with the "o" pronounced as in "no," and the "sh" pronounced as in "she."
The phrase "haddest notion" is a combination of two words: "haddest" and "notion".
The word "haddest" is the second person singular past tense form of the verb "have" in Early Modern English. It was commonly used during the Middle English period, which lasted from the 11th to the 15th century. "Haddest" essentially means "you had" or "you possessed" in this context.
The word "notion" comes from the Old French term "nozione" or "noition", which in turn derives from the Latin word "notio" meaning "idea" or "conception". "Notion" entered English in the 14th century, originally referring to a mental concept or understanding.