The correct spelling of the phrase "most ditto" is /moʊst ˈdɪtoʊ/. "Most" is a common word that means "the majority of" or "almost all," while "ditto" means "the same thing as what has just been mentioned." When used together, "most ditto" means "nearly all the same." The word "ditto" originated from the Italian word "detto," which also means "said" or "declared." So, when people use "ditto," they are essentially saying "I agree" or "me too."