The term 'QUIT A JOB' can be summarized by the crossword solution of RESIGN, which is a six-letter word. Resigning from a job is the act of formally leaving one's employment, usually in writing, and it is typically done when an employee no longer wishes to work for their current employer. It is important to note that resigning is different from being fired or laid off, as it is the employee's choice to leave the job.