drop-off

(n) a noticeable deterioration in performance or quality
- the team went into a slump
- a gradual slack in output
- a drop-off in attendance
- a falloff in quality
falling off, falloff, slump, slack,
(n) a steep high face of rock
- he stood on a high cliff overlooking the town
- a steep drop
cliff, drop,
(n) a change downward
- there was a decrease in his temperature as the fever subsided
- there was a sharp drop-off in sales
decrease, lessening,

(v) fall or diminish
- The number of students in this course dropped off after the first test
(v) change from a waking to a sleeping state
- he always falls asleep during lectures
dope off, doze off, drift off, drowse off, fall asleep, flake out, nod off,
(v) leave or unload
- unload the cargo
- drop off the passengers at the hotel
unload, put down, set down, discharge, drop,
(v) retreat fall behind, recede, fall back, lose,
(v) get worse
- My grades are slipping
drop away, fall away, slip,

falling off falloff slump slack cliff drop dope off doze off drift off drowse off fall asleep flake out nod off unload put down set down discharge decrease lessening fall behind recede fall back lose drop away fall away slip

awake come alive arouse awaken wake waken wake up increase gain ground get ahead make headway pull ahead win gain advance

drop out

drop-off charge