indefinite
//ɪnˈdɛfɪnɪt//
Adjective
indefiniteCanonical form
1
Not clearly defined, determined, or fixed; vague or uncertain in nature or extent.
The project has been postponed for an indefinite period.
2
Lasting for an unknown or unstated length of time; without a specified end.
The project has been postponed for an indefinite period.
3
(Grammar) Not referring to a specific person, thing, or amount; used to describe articles like 'a' or 'an'.
In English, 'a' and 'an' are indefinite articles.