Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for отец
Case
Singular
Plural
Nominative
отец
отцы
Accusative
отца
отцов
Genitive
отца
отцов
Dative
отцу
отцам
Instrumental
отцом
отцами
Prepositional
отце
отцах
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 · Singularотец → отца
The stem changes in this stored form, so a simple ending replacement would be misleading.
Show all case-build notes
Nominative · Singularотец
This is the dictionary form used to identify the noun.Nominative · Pluralотец → отцы
The stem changes in this stored form, so a simple ending replacement would be misleading.Accusative · Singularотец → отца
The stem changes in this stored form, so a simple ending replacement would be misleading.Accusative · Pluralотец → отцов
The stem changes in this stored form, so a simple ending replacement would be misleading.Genitive · Singularотец → отца
The stem changes in this stored form, so a simple ending replacement would be misleading.Genitive · Pluralотец → отцов
The stem changes in this stored form, so a simple ending replacement would be misleading.Dative · Singularотец → отцу
The stem changes in this stored form, so a simple ending replacement would be misleading.Dative · Pluralотец → отцам
The stem changes in this stored form, so a simple ending replacement would be misleading.Instrumental · Singularотец → отцом
The stem changes in this stored form, so a simple ending replacement would be misleading.Instrumental · Pluralотец → отцами
The stem changes in this stored form, so a simple ending replacement would be misleading.Prepositional · Singularотец → отце
The stem changes in this stored form, so a simple ending replacement would be misleading.Prepositional · Pluralотец → отцах
The stem changes in this stored form, so a simple ending replacement would be misleading.