Undefined
Part of speech: adjective
Definition: Lacking a definition or value That does not have a meaning and is thus not assigned an interpretation (for example, division by zero)
Example sentence: Under the Racial and Religious Hatred Act 2006, it is an offence to stir up hatred towards religious and racial groups. 'Stirring up hatred' is an expression both loaded and undefined. Do I stir up hatred towards a religious group by criticising its beliefs in outspoken terms?
Indefinite
Part of speech: adjective
Definition: Without limit; forever, or until further notice; not definite.Vague or unclear.Undecided or uncertain.An integral without specified limits.
Example sentence: This war on terrorism is going to continue for an indefinite period of time.