drop behind
(someone or something) 1. . Lit. to reduce speed and end up after someone or a group, at the back of a moving line. I dropped behind the rest of the people, because I can't walk that fast. I dropped behind the speeding pack of cars and drove a little slower.
2. Fig. to fail to keep up with the schedule being followed by someone or a group. My production output dropped behind what it should have been. I stayed later at work to keep from dropping behind.
drop behind
(someone or something ) 1. . Lit. to reduce speed and end up after someone or a group, at the back of a moving line. I dropped behind the rest of the people, because I can't walk that fast. I dropped behind the speeding pack of cars and drove a little slower.
2. Fig. to fail to keep up with the schedule being followed by someone or a group. My production output dropped behind what it should have been. I stayed later at work to keep from dropping behind.