· lose consciousness due to a sudden trauma, for example
Synonym(s): pass_out, black_out
Hypernym(s): change_state, turn
· fall asleep fast, as when one is extremely tired; "after the long drive, we zonked out and slept for 10 hours"
Hypernym(s): fall_asleep, dope_off, flake_out, drift_off, nod_off, drop_off, doze_off, drowse_off