This train is supposed to be on time.
be supposed to be sth
idiomyou use this when something is expected or intended to be a certain way, even if it is not actually like that.
The hotel room was supposed to be quiet, but the music from the street kept me awake all night.
Although the new policy was supposed to be a solution to the budget crisis, it actually created more financial problems for the department.
Last updated April 22, 2026