Definition of Indefinite
Indefinite means 'not final' or 'not over'. It's the exact opposite of the word 'definite'. When you say that an event is indefinite, it means that the event will continue running for a longer time that is not fixed.
Not final; pending.
not definite; without fixed or specified limit; unlimited: an indefinite number. If this doesn't help then go to Dictionary.com, there is more definitions. :)