How Do You Spell HADDEST SIGNIFICANCE FOR?
Pronunciation: [hˈadəst sɪɡnˈɪfɪkəns fɔː] (IPA) 
The correct spelling of the phrase "haddest significance for" is "had the most significance for." The word "haddest" is an archaic form of the verb "have" and is no longer used in modern English. The IPA phonetic transcription for "had the most significance for" is /hæd ðə məʊst sɪɡˈnɪfɪkəns fɔː/. It is important to use the correct spelling and pronunciation when communicating in English as it helps to convey the intended meaning more clearly.
