1. (verb) change from a waking to a sleeping state

• dope off
• doze off
• drift off
• drowse off
• fall asleep
• flake out
• nod off

2. (verb) leave or unload

• discharge
• drop
• put down
• set down
• unload

3. (verb) retreat

• fall back
• fall behind
• lose
• recede

4. (verb) get worse

• drop away
• fall away
• slip

1. (verb) change from a waking to a sleeping state

• zonk out

2. (verb) leave or unload

• air-drop
• wharf

3. (verb) get worse

• backslide
• lapse

1. (verb) fall or diminish

• decrease
• diminish
• fall
• lessen

2. (verb) leave or unload

• deliver

3. (verb) retreat

• regress
• retrograde
• retrogress

4. (verb) get worse

• decline
• worsen

1. (verb) change from a waking to a sleeping state

• arouse
• awake
• awaken
• come alive
• wake
• wake up
• waken

2. (verb) retreat

• advance
• gain
• gain ground
• get ahead
• make headway
• pull ahead
• win

1. (verb) fall or diminish

• decrease
• drop-off
• lessening

2. (verb) leave or unload

• drop

3. (verb) retreat

• ceding back
• recession
• receding
• recession

4. (verb) get worse

• drop-off
• falling off
• falloff
• slack
• slump
• slippage