"temporary expedient" is correct and usable in written English.
You can use it to refer to a quick solution to a problem that is usually only intended to be in place until a more permanent solution is reached. For example: "Using the company credit card as a temporary expedient, she was able to cover the unexpected expenses until the loan came through."
Human rights abuses are almost always justified as a temporary expedient prompted by a security crisis.
This was a temporary expedient, the authority says, but even so it did not inspire confidence.
A truss is usually a temporary expedient and is seldom used as a substitute for surgical care.
Although this was initially a temporary expedient, by the 15th century it had become a permanent institution.
During the Second World War, some economists hailed the introduction of price controls and central planning; Keynes viewed this policy as a temporary expedient that shouldn't be sustained.
He remained a conservative republican, however, viewing economic controls as a temporary expedient and opposing social welfare measures favoured by the Parisian lower classes.
But Rome regarded these as temporary expedients, and none outlasted the Flavian Period (69 96).
But these seem like temporary expedients: lending the countries money for extended periods at rates neither can afford.
Various other designs have been tried since, but all were seen as temporary expedients intended to tide a patient over until the real thing became available from a human donor.That may be about to change.
The temporary expedients resorted to by President Obama are just that -- temporary and disregarding of the energy and dispatch our founders intended the presidential office to possess.
But for all the talk by Iraqi government officials about breaking the back of the militias, and the militants' bluster about defending their turf, it was clear that the two sides had much to lose if they were unable to reach an accommodation, however temporary or expedient.
