The phrase "indefinite time" is correct and can be used in written English.
You can use it when you want to refer to a period of time that is unspecified or uncertain. For example, "He has been away for an indefinite time."
To aid the cause, this will be my last formal post for an indefinite time.
"Just stuff to live on the wall for an indefinite time period".
Even if that is true, bombings like the ones in Jakarta will recur for an indefinite time.
Should his proposal become law, Germany will offer immediate entry, for an indefinite time, to highly qualified foreign workers.
The bridge has been closed for "an indefinite time due to mechanical issues", according to the Ontario Provincial Police, reported CBC news.
These cycles of decay and renewal occurred in indefinite time, "so that, with respect to human observation, this world has neither a beginning nor an end".
Within 24 hours of being exposed to the public, Tay took on a racist, sexist, homophobic personality and had to be taken for an indefinite time-out.
The experts emphasized that no one should take Cipro or any other antibiotic out of fear that they might be exposed to anthrax at some indefinite future time.
This model does not satisfy the perfect cosmological principle, but it assumes an indefinite cosmic time scale during which matter is continually created.
The next major operation was in July, when an indefinite night time curfew was imposed, in response to several attacks in and around the city.
For indefinite real-time use, it is advisable to either set w = 0 or to update w at regular intervals to account for changes in dynamic level.
