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CaseSingularPlural
Nominativeименительный · кто? что?причина причины the subject: who or what acts
Accusativeвинительный · кого? что?причину причины the direct object of the verb
Genitiveродительный · кого? чего?причины причин possession, absence, "of"-phrases
Dativeдательный · кому? чему?причине причинам the receiver: to or for someone
Instrumentalтворительный · кем? чем?причиной причинами the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?причине причинах location and topics: in, at, about

Причина 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 причина 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 причина and every word like it with typed case endings, checked letter by letter.

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