The phrase "didst a job" is an archaic and formal expression of completed work, typically associated with Old English literature. However, there are many modern synonyms to describe the same concept, like performed a task, completed an assignment, executed a project, fulfilled a duty, accomplished a mission, carried out a responsibility, achieved a goal, finished a job, and wrapped up a project. These alternative phrases are words designed to communicate completion in a more contemporary way. Whether you're a student, employee, or entrepreneur, using these modern expressions will help you communicate your achievements confidently and effectively.