Necessary Task is a term used to describe a task that must be completed in order to achieve a desired outcome. The term can also be used to refer to a job or responsibility that must be done in order to maintain a certain level of functioning. In this case, the crossword solution for Necessary Task is 'CHORE, ' which is defined as a routine task or duty that must be completed regularly. Chores are often mundane tasks that are necessary to keep a household running smoothly, such as cleaning, laundry, and yard work.