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CaseSingularPlural
Nominativeименительный · кто? что?долгий долгие the subject: who or what acts
Accusativeвинительный · кого? что?долгий (inanimate) / долгого (animate) долгие (inanimate) / долгих (animate) the direct object of the verb
Genitiveродительный · кого? чего?долгого долгих possession, absence, "of"-phrases
Dativeдательный · кому? чему?долгому долгим the receiver: to or for someone
Instrumentalтворительный · кем? чем?долгим долгими the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?долгом долгих location and topics: in, at, about

Долгий is an adjective: it copies the gender, number, and case of its noun. The table shows masculine and plural; feminine and neuter follow the same stem with their own endings.

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

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