Finding synonyms for the phrase "hadst job" can be quite challenging since it's not a commonly used phrase. However, if we break it down by the individual words, we can come up with some alternative phrases that convey a similar meaning. Firstly, "hadst" is an archaic form of the verb "had," which means to possess or hold. Therefore, we can replace it with phrases like "possessed a task" or "held a responsibility." Secondly, "job" refers to a task or duty that needs to be completed, so we can replace it with synonyms like "project," "assignment," or "undertaking." Overall, there are numerous alternatives for "hadst job" once we identify the key components of the phrase.