Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for автор
Case
Singular
Plural
Nominative
автор
авторы
Accusative
автора
авторов
Genitive
автора
авторов
Dative
автору
авторам
Instrumental
автором
авторами
Prepositional
авторе
авторах
Form pattern
How the forms are built
The paradigm above is authoritative. These notes expose a transparent ending change only when the stored declension family supports one.
Genitive · Singularавтор- + -а → автора
Keep the stored stem and add -а.
Show all case-build notes
Nominative · Singularавтор
This is the dictionary form used to identify the noun.Nominative · Pluralавтор- + -ы → авторы
Keep the stored stem and add -ы.Accusative · Singularавтор- + -а → автора
Keep the stored stem and add -а.Accusative · Pluralавтор- + -ов → авторов
Keep the stored stem and add -ов.Genitive · Singularавтор- + -а → автора
Keep the stored stem and add -а.Genitive · Pluralавтор- + -ов → авторов
Keep the stored stem and add -ов.Dative · Singularавтор- + -у → автору
Keep the stored stem and add -у.Dative · Pluralавтор- + -ам → авторам
Keep the stored stem and add -ам.Instrumental · Singularавтор- + -ом → автором
Keep the stored stem and add -ом.Instrumental · Pluralавтор- + -ами → авторами
Keep the stored stem and add -ами.Prepositional · Singularавтор- + -е → авторе
Keep the stored stem and add -е.Prepositional · Pluralавтор- + -ах → авторах
Keep the stored stem and add -ах.