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

Examples
Tengo una quemadura en el dedo por tocar la estufa.
I have a burn on my finger from touching the stove.
Usa protector solar para evitar una quemadura de sol.
Use sunscreen to avoid a sunburn.
La quemadura de segundo grado necesita atención médica.
The second-degree burn needs medical attention.
Gender Identification
This word is feminine because it ends in '-a'. You should always use it with feminine words like 'la' (the) or 'una' (a).
Action vs. Result
Use this word when talking about the actual mark or injury on the skin. If you want to talk about the action of fire, use the verb 'quemar'.
Using 'Quemado' as a Noun
Mistake: “Tengo un quemado en la mano.”
Correction: Tengo una quemadura en la mano. 'Quemado' is usually an adjective (describing word), while 'quemadura' is the noun (the thing itself).
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