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CaseSingularPlural
Nominativeименительный · кто? что?фамилия фамилии the subject: who or what acts
Accusativeвинительный · кого? что?фамилию фамилии the direct object of the verb
Genitiveродительный · кого? чего?фамилии фамилий possession, absence, "of"-phrases
Dativeдательный · кому? чему?фамилии фамилиям the receiver: to or for someone
Instrumentalтворительный · кем? чем?фамилией фамилиями the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?фамилии фамилиях location and topics: in, at, about

Фамилия is a feminine noun; the ending pattern above repeats across most feminine nouns, so every table you learn makes the next one cheaper.

Look up any other word in the Russian declension tool, see where фамилия ranks in the most common Russian words, or start from Russian cases explained if the table above is new territory. More vocabulary lives in Russian words by topic and Russian phrases.

12 forms is a table. Using them is a skill.

Slova drills фамилия and every word like it with typed case endings, checked letter by letter.

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