faint, pass out, swoon, conk - pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain

change state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election"

dope off, doze off, drift off, drowse off, fall asleep, flake out, nod off, drop off - change from a waking to a sleeping state; "he always falls asleep during lectures"