Lose is defined as to wind up without something or to fail in a competition.
To drop off is to take something or someone to a specific destination and leave it there, not usually lingering or staying around.
To move back or away from a limit, point, or mark:
Lag is defined as to stay behind or fall behind
Find another word for fall-behind. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for fall-behind, like: fall back, lose, drop-off, recede, lag and dawdle.