What do you put on reason for leaving on a job application if you quit?

put down - personal prospect,- this is a nice way of saying the job wasn't for you so you went in search of finding the ideal job. advacement purposes,-got a better job,travel purposes, some people that take time off to travel use that one. some people that go back to school use education prospect or educational purpose, or the position they worked at is not what they were trained for. some people take jobs that they are over educated for until something comes along that better fits them.geographical prospect- moved to get a different job.