behind time adv. or
adj. phr. 1a. Behind the correct time; slow.
That clock is behind time. 1b. Behind schedule; late.
The train is running behind time today. 2. Not keeping up; not at the proper time; overdue.
Your lessons are good, but why are you behind time? We are behind time in paying the rent. Antonym: AHEAD OF TIME, IN TIME, ON TIME.
[TahlilGaran] English Idioms Dictionary ▲