indefinite
🇺🇸
/ɪnˈdefɪnət/
🇬🇧
/ɪnˈdefɪnət/
lasting for an unknown or unlimited time
The project was put on hold for an indefinite period.
该项目被无限期搁置。
not clear or exact
He gave an indefinite answer about his plans.
关于他的计划,他给出了一个模糊的回答。