"Frankliest" is not a correct spelling in English. However, if someone wanted to use this word, it would likely be pronounced "/ˈfræŋk·li·ɪst/". The "-liest" ending is used to create a superlative form, meaning "the most frank." However, the correct spelling would be "most frank," as "-liest" is not a suffix that can be added to all adjectives. It is important to use proper spelling and grammar to effectively communicate in English.