Unlike third-person possessive pronouns, the pronouns for "my" (minn) and "your" (þinn) must change to match the gender, number, and case of the noun they describe.
When the noun being owned is the direct object of an action (for example, the thing you are washing, finding, or taking), it takes the accusative case. The possessive pronoun that follows it must also be in the accusative form.
Notice that in the singular, only the feminine forms change from their subject (nominative) forms:
| Gender | Nominative (Subject) | Accusative (Direct Object) |
|---|
| Neuter | mitt / þitt | mitt / þitt |
| Feminine | mín / þín | mína / þína |
| Masculine | minn / þinn | minn / þinn |
Neuter Nouns (mitt, þitt)
For neuter nouns, the accusative forms are exactly the same as the nominative forms: mitt and þitt.
Feminine Nouns (mína, þína)
For feminine nouns, the pronouns change when they become the direct object. You must add an -a to the end, turning mín and þín into mína and þína.
Masculine Nouns (minn, þinn)
Just like the neuter forms, the accusative singular forms for masculine nouns remain identical to their nominative forms: minn and þinn.
Multiple Objects
If a sentence has multiple direct objects of different genders, each possessive pronoun must match the specific noun it belongs to.