The spelling of the word "hadst implications for" is based on its Old English origins. The word "hadst" is the second person singular past tense of the verb "to have," which in modern English is "had." The IPA (International Phonetic Alphabet) transcription of "hadst" is /hædst/ , with the "d" sound pronounced as a voiced dental plosive. The full phrase "hadst implications for" means that something has consequences or implications. Despite its archaic spelling, the phrase is still occasionally used in literary contexts.