How to Say "fingernails" in Spanish
The Spanish word for “fingernails” is “uñas” — A1 level. This is a very common word in everyday Spanish.

Examples
Necesito cortar mis uñas porque están muy largas.
I need to cut my nails because they are very long.
Me gusta pintarme las uñas de color rojo.
I like to paint my nails red.
Mi perro no deja de lamerse las uñas de las patas.
My dog won't stop licking the nails on his paws.
Use of the Article
When talking about body parts, Spanish often uses 'el,' 'la,' 'los,' or 'las' instead of 'mi' or 'tu' when the owner is already clear. (e.g., 'Me corto las uñas,' not 'mis uñas.')
Possessive confusion
Mistake: “Voy a cortar mis uñas.”
Correction: Voy a cortarme las uñas. (The reflexive verb 'cortarse' makes it clear they are your nails, so you don't need 'mis'.)
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