· fall or diminish; "The number of students in this course dropped off after the first test"
Hypernym(s): decrease, diminish, lessen, fall
· change from a waking to a sleeping state; "he always falls asleep during lectures"
Synonym(s): fall_asleep, dope_off, flake_out, drift_off, nod_off, doze_off, drowse_off
· remove (cargo, people, etc.) from and leave; "unload the cargo"; "drop off the passengers at the hotel"
Synonym(s): drop, set_down, put_down, unload, discharge
Hypernym(s): deliver
· retreat
Synonym(s): fall_back, fall_behind, recede
Hypernym(s): regress, retrograde, retrogress
· get worse; "My grades are slipping"
Synonym(s): slip, drop_away, fall_away