The correct spelling of the phrase "haddest portion of" is important to ensure clear communication. "Haddest" is the archaic second person singular past tense of "have," and is pronounced /ˈhædəst/ in IPA phonetic transcription. "Portion" is pronounced /ˈpɔːʃən/ and refers to a part or share. Therefore, "haddest portion of" means that you possessed a certain portion or share in the past. Overall, being mindful of spelling and pronunciation helps convey meaning accurately in both written and spoken language.