The spelling of the word "hadst up tree" follows the Early Modern English language. The word "hadst" is the second person, singular past tense form of the verb "have" and is pronounced /hædst/. The word "up" is pronounced /ʌp/ and refers to a direction higher than or above a given point, while the word "tree" is the noun /tri/, referring to a tall plant with a trunk and branches. Together, the phrase "hadst up tree" can be interpreted as someone having climbed up a tree in the past.