drop off

Primary Meanings of drop off

1.
v
fall or diminish
2.
v
change from a waking to a sleeping state
Full Definitions of drop off
1

v fall or diminish

“The number of students in this course dropped off after the first test”
Type of:
decrease, diminish, fall, lessen
decrease in size, extent, or range

v leave or unload

Synonyms:
discharge, drop, put down, set down, unload
Types:
wharf
discharge at a wharf
air-drop
drop (an object) from the air; unload from a plane or helicopter
Type of:
deliver
bring to a destination, make a delivery

v retreat

Synonyms:
fall back, fall behind, lose, recede
Antonyms:
advance, gain, gain ground, get ahead, make headway, pull ahead, win
obtain advantages, such as points, etc.
Type of:
regress, retrograde, retrogress
get worse or fall back to a previous condition

v get worse

Synonyms:
drop away, fall away, slip
Types:
backslide, lapse
drop to a lower level, as in one's morals or standards
Type of:
decline, worsen
grow worse
2

v change from a waking to a sleeping state

Synonyms:
dope off, doze off, drift off, drowse off, fall asleep, flake out, nod off
Antonyms:
arouse, awake, awaken, come alive, wake, wake up, waken
stop sleeping
Types:
zonk out
fall asleep fast, as when one is extremely tired

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