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CaseSingularPlural
Nominativeименительный · кто? что?пиджак пиджаки the subject: who or what acts
Accusativeвинительный · кого? что?пиджак пиджаки the direct object of the verb
Genitiveродительный · кого? чего?пиджака пиджаков possession, absence, "of"-phrases
Dativeдательный · кому? чему?пиджаку пиджакам the receiver: to or for someone
Instrumentalтворительный · кем? чем?пиджаком пиджаками the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?пиджаке пиджаках location and topics: in, at, about

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

Look up any other word in the Russian declension tool, see where пиджак 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 пиджак and every word like it with typed case endings, checked letter by letter.

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