Possessive articles in the dative (meinem, meiner, meinem, meinen)

You already know how possessive articles like mein, dein, and sein work in the nominative and accusative — they take the same endings as ein. The dative adds one more set of endings to learn, and it's the same story again: possessive articles just add the dative ein-word endings you already know from einem, einer, and keinem. This covers the three cases you've met so far — the fourth German case, the genitive, comes later, at B1.

Quick shortcut: in the dative, every gender takes an ending — -em for masculine and neuter, -er for feminine, -en for plural — exactly the endings on einem/einer/einen.

The full paradigm

Here's mein- declined through all three cases you've learned so far:

• Ich helfe meinem Vater. (I'm helping my father.) — masculine, dative
• Ich schreibe meiner Mutter. (I'm writing to my mother.) — feminine, dative
• Ich gebe meinem Kind das Buch. (I'm giving my child the book.) — neuter, dative
• Ich helfe meinen Kindern. (I'm helping my children.) — plural, dative — remember the noun's own -n too (unless the plural already ends in -n or -s, like Frauen or Autos), exactly as with any other dative plural

Every other possessive stem — dein-, sein-, ihr-, unser-, euer-, ihr-/Ihr- — takes these same dative endings. Only the stem changes with the owner; the endings only ever depend on the noun's gender, number, and case.

Why the endings look familiar

Line up the dative endings on mein- next to the ones on ein and dem, and nothing here is new:

Mein-, like ein, is an ein-word — an article that takes ein's set of endings rather than being declined like der/die/das itself. Its dative ending just happens to match the tail end of the definite article's own dative form: -em where dem ends in -em, -er where der ends in -er, -en where den ends in -en. Possessive articles simply extend the same pattern into the plural, where ein itself has no form at all.

Euer still drops its e

The spelling twist from the nominative/accusative lesson carries over unchanged: euer drops the e right before the r whenever an ending follows, including in the dative:

• ✅ Ich helfe eurem Vater. — not ❌ euerem
• ✅ Ich schreibe eurer Mutter. — not ❌ euerer

Common mistakes

• ❌ Ich helfe mein Vater. → ✅ Ich helfe meinem Vater. (dative always adds an ending, even for masculine and neuter, which had no ending at all in the nominative)
• ❌ Ich gebe meinem Kinder das Buch. → ✅ Ich gebe meinen Kindern das Buch. (plural dative is -en on the article — meinem is the masculine/neuter form, not the plural one)
• ❌ Ich schreibe meine Mutter. → ✅ Ich schreibe meiner Mutter. (feminine looks the same in the nominative and accusative, but the dative -er is different from both)
• ❌ Ich helfe euerem Bruder. → ✅ Ich helfe eurem Bruder. (euer drops its middle e here too, just like in the nominative and accusative)

Quick check

Fill in the correct dative possessive form.

1. (ich) Ich helfe ____ Schwester. (mein / meiner / meine)
2. (er) Ich schreibe ____ Vater einen Brief. (sein / seinem / seiner)
3. (wir) Ich gebe ____ Kindern die Bücher. (unser / unseren / unserem)
4. (ihr) Ich danke ____ Lehrer. (euer / eurem / eure)

Key takeaways

• Possessive articles take the same dative endings as any other ein-word: -em for masculine and neuter, -er for feminine, -en for plural.
• These endings match the definite article's own dative forms — dem, der, dem, den — just added onto the possessive stem instead.
• Unlike the nominative, where masculine and neuter have no ending at all, the dative always adds one, for every gender.
• Don't forget the plural noun's own -n alongside the article ending, as with any other dative plural — unless the plural already ends in -n or -s.
• Euer still drops its middle -e before a dative ending: eurem, eurer — not euerem/euerer.