The word "haddest at" is an archaic form of the verb phrase "had at." It is spelled with a double "d" and "t" due to the pronunciation in early modern English, which included a glottal stop between the two consonants. The correct phonetic transcription is /ˈhædəst æt/. This phrase is seldom used in modern English, but it was commonly used in Shakespeare's plays and other works of literature from the Renaissance era.
"Haddest at" is not a stand-alone word or phrase with a specific etymology. It seems to be a combination of two separate words:
1. "Haddest": This is the second-person singular past tense of the verb "to have" in Middle English. It originated from the Old English word "hæfde", which also meant "had". The spoken language evolved over time, and "haddest" was used during the late Middle English period (11th to 15th century) when discussing or addressing one person who possessed or controlled something in the past.
2. "At": This is a preposition that represents location or direction. It comes from the Old English word "æt" with the same meaning.
Together, "haddest at" suggests the action of having or possessing something at a specific location or direction in the past.