How to Say "faintness" in Spanish
The Spanish word for “faintness” is “mareo” — A2 level. This is a very common word in everyday Spanish.

Examples
Tengo un poco de mareo por el viaje en autobús.
I feel a bit of motion sickness from the bus trip.
Si te levantas muy rápido, puedes sentir mareo.
If you stand up too fast, you might feel dizzy.
Las pastillas son muy efectivas contra el mareo.
The pills are very effective against nausea.
Using 'Tener' and 'Sentir'
Unlike English where you 'are' dizzy (adjective), in Spanish you usually 'have' (tener) or 'feel' (sentir) 'mareo' (noun).
Plural vs. Singular
You can use the plural 'mareos' to talk about recurring spells of dizziness, but the singular 'mareo' is more common for a specific moment.
Don't use 'estar'
Mistake: “Estoy mareo.”
Correction: Tengo mareo OR Estoy mareado.
Related Translations
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