A guide to saying it like a local
How to Say "He fainted" in Spanish
Use 'Se desmayó' to report someone suddenly losing consciousness in Spanish.
Se desmayó
seh des-mah-YOHneutral
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This is what you say when someone suddenly collapses and loses consciousness, like if they faint from heat or a sudden shock. It's a direct way to report the event to others.
Alternatives
- Perdió el conocimientoMore formal and descriptive, literally 'lost consciousness'.
- Se ha desmayadoUsed when the fainting just happened and is still relevant to the present.
Ways to get it wrong
Confusing 'desmayar' with 'desmayo'
'Desmayar' is the verb 'to faint', while 'desmayo' is the noun 'faint'.
Incorrect pronoun
Always use 'se' with 'desmayar' when someone faints; it's a reflexive verb.
When you'd actually say this
-
Crowded summer metro car
You're standing in a packed Mexico City metro during the afternoon heat, and the man gripping the overhead bar in front of you suddenly goes limp and slides to the floor. You turn to the other passengers and say loudly, 'Se desmayó, denle espacio' — give him space. The smell of sweat and the rocking of the car make the moment feel urgent and disorienting.
-
Wedding reception, outdoor ceremony
You're seated in the third row at an outdoor wedding in Seville in July, and the best man, who has been standing in direct sun for forty minutes, suddenly drops. You grab the arm of the person next to you and say, 'Se desmayó, hay que llamar a alguien.' The music stops and heads turn toward you.
-
Hospital waiting room, bad news
A nurse has just delivered difficult news to a family in the waiting room, and the elderly woman beside you crumples sideways off her chair. You stand up and call toward the reception desk, 'Se desmayó, necesitamos ayuda aquí.' Your voice comes out louder than you expected in the quiet room.
Related ways to say it in Spanish
- Se fue al suelo — He hit the floor / he went down
- Colloquial and vivid; used in casual speech when describing the physical collapse rather than the medical event — more common in Spain and the Southern Cone than in Mexico.
- Le dio un vahído — He had a fainting spell / a dizzy collapse
- Slightly old-fashioned and more common among older speakers in Spain; implies a brief, mild faint rather than a full loss of consciousness — use this when the person recovered almost immediately.
- Se quedó sin sentido — He lost his senses / he went unconscious
- Informal but widely understood across Latin America; sits between the bluntness of 'se desmayó' and the clinical tone of 'perdió el conocimiento' — useful when speaking to family members rather than medical staff.
- Se desplomó — He collapsed
- Emphasizes the sudden, heavy physical fall rather than the loss of consciousness specifically; appropriate when you witnessed the drop but are not certain the person was fully unconscious.
Notes for English speakers
- English speakers often want to add a subject pronoun and say 'Él se desmayó' to mean 'he fainted', but in natural spoken Spanish the pronoun is almost always dropped — 'Se desmayó' alone is unambiguous and sounds far more natural in an emergency.
- The stress falls on the final syllable — des-ma-YÓ — because the accent mark signals a preterite ending, and English speakers frequently flatten it to 'des-MAY-oh', which can sound like a present-tense form or simply unclear to a Spanish speaker under stress.
- Unlike English, where 'fainted' and 'passed out' carry slightly different registers, 'se desmayó' covers both the clinical and the casual register in Spanish — you do not need a separate informal word, so reaching for slang here is unnecessary and can occasionally cause confusion.
The same phrase in other languages
Frequently asked
what does se desmayo mean?
It means 'he/she/it fainted' or 'you (formal) fainted'. It describes someone suddenly losing consciousness.
how to say he fainted in spanish?
The most common way is 'Se desmayó'. This is a straightforward and widely understood phrase.
is se desmayo formal or informal?
It's a neutral phrase that works in most situations. You can use it with friends or when speaking to medical professionals.
