ad hoc → adjust ad hoc (made or done only for a particular purpose or need): I have to make some ad hoc changes to the schedule.
adjacent (next to or adjoining to a building, room, etc.): My office is adjacent to his.
adjoin (be next to a building, room, etc.): A vacant plot of land adjoins the building.
adjourn (break off a formal meeting or trial for a period of time): Let’s adjourn the meeting until tomorrow.
adjudicate (make an official judgment or decision): He was also asked to adjudicate the contest.
adjure (urge or request earnestly): The judge adjured him to tell the truth.
adjust (change something slightly to make it correct, effective or suitable): I have to check and adjust the breaks regularly.
adjust (adapt): It took him a while to adjust to life in Tokyo.