lose consciousness
Pass out cold
To lose consciousness is to pass from wakefulness into a state of unawareness—through fainting, injury, anesthesia, or similar causes.
The phrase is clinical and precise, favored in medical contexts: The patient lost consciousness briefly after the fall.
It contrasts with more casual expressions like "pass out" or "black out."
- faintWeak and indistinct
- blackoutComplete power loss
- pass outLose consciousness briefly
- black outLose consciousness briefly
- swoonLose consciousness briefly
keel over · collapse · dizzy · lights out · coma · fade to black · knockout · daze · syncope · slip away · go limp · fall · anesthesia · go under · ether · smelling salts · head injury · concussion
loses, losing, losers, losses, conscious, consciousness, consciously, unconscious, unconsciously