1. (verb) lose consciousness due to a sudden trauma, for example

• black out
• pass out

1. (verb) lose consciousness due to a sudden trauma, for example

• change state
• turn

2. (verb) fall asleep fast, as when one is extremely tired

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

1. (verb) lose consciousness due to a sudden trauma, for example

• conk
• faint
• pass out
• swoon

1. (verb) lose consciousness due to a sudden trauma, for example

• blackout