English

My, your and the treacherous su

Mis hermanos — my brothers: mis is plural because there are several brothers, not because there's more than one of you. Short possessives stand in front of the noun this way in general. They agree with the thing owned, not with the owner: mi hermano, mis hermanos, nuestra casa. For example: “Mis hermanos viven en Sevilla” — My brothers live in Seville. A rule from the Spanish course: worked out on examples, not…

Updated September 1, 2026 · Lingofly

How it works

Mis hermanos — my brothers: mis is plural because there are several brothers, not because there's more than one of you. Short possessives stand in front of the noun this way in general. They agree with the thing owned, not with the owner: mi hermano, mis hermanos, nuestra casa.

Only nuestro and vuestro change for gender. Mi, tu and su look the same for masculine and feminine.

The troublemaker is su. It covers 'his', 'her', 'their' and 'your': su casa can be any of four houses. When talk alone will not settle it, Spanish adds a preposition: el coche de ella, la casa de usted.

There are long forms too: mío, tuyo, suyo. They follow the noun or ser: un primo mío, este cargador es mío. Mi amigo is my friend; un amigo mío is one of them.

Table

My, your and the treacherous su
ownerbefore the nounafter the nounexample
Imi / mismío, míami tía · una tía mía
you (tú)tu / tustuyo, tuyatu buzón · es tuyo
he, she, ustedsu / sussuyo, suyasu patio · el patio de ella
wenuestro, nuestranuestro, nuestranuestra boda
you (vosotros)vuestro, vuestravuestro, vuestravuestros nietos
they, ustedessu / sussuyo, suyasu fiesta · la fiesta de ellos

By example

  • Mis hermanos viven en Sevilla
    My brothers live in Seville
  • No es su coche, es el coche de ella
    It's not his car, it's her car
  • Un primo mío se casa en junio
    A cousin of mine is getting married in June

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

My, your and the treacherous su: how does it work in Spanish?

Mis hermanos — my brothers: mis is plural because there are several brothers, not because there's more than one of you. Short possessives stand in front of the noun this way in general. They agree with the thing owned, not with the owner: mi hermano, mis hermanos, nuestra casa.

What does it look like in a Spanish example sentence?

“Mis hermanos viven en Sevilla” — My brothers live in Seville. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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