The spelling of the word "hadst odor" may seem unusual and confusing, but it can be deciphered using the International Phonetic Alphabet (IPA). The word "hadst" is an archaic form of the verb "have" with the suffix "-st," indicating the second person singular form. The IPA transcription for "hadst" is /hædst/. "Odor" is a phonetic spelling of "odour," the British spelling for "odor." The IPA transcription for "odor" is /ˈəʊdə/. Together, "hadst odor" is pronounced as /hædst ˈəʊdə/.