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

Examples
Mi hermano se llama Carlos.
My brother's name is Carlos.
Tengo dos hermanos y una hermana.
I have two brothers and one sister.
En total, somos cuatro hermanos en mi familia.
In total, we are four siblings in my family.
One Word for 'Siblings'
In Spanish, if you have one brother and one sister, you say 'Tengo dos hermanos.' The masculine plural form 'hermanos' is used for a group of all brothers, or a mixed group of brothers and sisters.
Using 'el' and 'un'
Since 'hermano' is a masculine word, you'll use masculine articles with it, like 'el hermano' (the brother) and 'un hermano' (a brother).
Forgetting the Mixed-Group Rule
Mistake: “If you have a brother and a sister, you might say 'Tengo un hermano y una hermana.' While correct, if you want to say 'I have two siblings,' you need the masculine plural.”
Correction: Say 'Tengo dos hermanos' to mean 'I have two siblings' (one boy, one girl). Don't use 'hermanas' unless the group is all female.
Related Translations
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