Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for успех
Case
Singular
Plural
Nominative
успех
успехи
Accusative
успех
успехи
Genitive
успеха
успехов
Dative
успеху
успехам
Instrumental
успехом
успехами
Prepositional
успехе
успехах
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 · Singularуспех- + -а → успеха
Keep the stored stem and add -а.
Show all case-build notes
Nominative · Singularуспех
This is the dictionary form used to identify the noun.Nominative · Pluralуспех- + -и → успехи
Keep the stored stem and add -и.Accusative · Singularуспех- + zero ending → успех
Remove the zero ending; this form has a zero ending.Accusative · Pluralуспех- + -и → успехи
Keep the stored stem and add -и.Genitive · Singularуспех- + -а → успеха
Keep the stored stem and add -а.Genitive · Pluralуспех- + -ов → успехов
Keep the stored stem and add -ов.Dative · Singularуспех- + -у → успеху
Keep the stored stem and add -у.Dative · Pluralуспех- + -ам → успехам
Keep the stored stem and add -ам.Instrumental · Singularуспех- + -ом → успехом
Keep the stored stem and add -ом.Instrumental · Pluralуспех- + -ами → успехами
Keep the stored stem and add -ами.Prepositional · Singularуспех- + -е → успехе
Keep the stored stem and add -е.Prepositional · Pluralуспех- + -ах → успехах
Keep the stored stem and add -ах.