drop behind

Verb drop behind has 1 sense

• drop behind(v = verb.motion) drag, drop back, get behind, hang back, trail - to lag or linger behind; "But in so many other areas we still are dragging"
is one way to dawdle, fall back, fall behind, lag
Sample sentences:
Something ----s
Somebody ----s
Something is ----ing PP
Somebody ----s PP