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

Examples
Mi hermanita tiene solo cinco años y le encanta dibujar.
My little sister is only five years old and she loves to draw.
¡Hola, hermanita! ¿Cómo te fue en el colegio hoy?
Hello, dear sister! How was school today?
The Diminutive Suffix
The '-ita' ending doesn't just mean 'small'; it usually adds a feeling of affection, warmth, or tenderness. It turns 'sister' (hermana) into 'dear little sister' (hermanita).
Confusing Size and Affection
Mistake: “Using 'hermanita' only for sisters who are physically small or young.”
Correction: You can call your adult sister 'hermanita' if you feel close to her. The affection is more important than the age.
Related Translations
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