Word/Phrase: pass out
Translation: desmayarse
Pronunciation: dɛsmaˈjaɾse
I felt dizzy and started to pass out - Me sentí mareado y empecé a desmayarme
He was so tired that he might pass out at any moment - Estaba tan cansado que podría desmayarse en cualquier momento
Don't stay up too late, or you'll pass out - No te quedes despierto hasta tarde, o te desmayarás
The heat was overwhelming, and I thought I would pass out - El calor era abrumador, y pensé que me desmayaría
She was so shocked that she nearly passed out - Estaba tan sorprendida que casi se desmaya