The correct spelling of the phrase "most half cooked" is "undercooked." The pronunciation of this word is /ʌndərˈkʊkt/. The "un" prefix means "not" or "lacking," while "der" is pronounced with a schwa sound and refers to being below or beneath something. "Cooked" is pronounced with the "oo" sound, as in "book," and refers to food being heated to a certain temperature. Therefore, "undercooked" means that the food has not been fully cooked or heated through.