Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for интерес
Case
Singular
Plural
Nominative
интерес
интересы
Accusative
интерес
интересы
Genitive
интереса
интересов
Dative
интересу
интересам
Instrumental
интересом
интересами
Prepositional
интересе
интересах
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 · Singularинтерес- + -а → интереса
Keep the stored stem and add -а.
Show all case-build notes
Nominative · Singularинтерес
This is the dictionary form used to identify the noun.Nominative · Pluralинтерес- + -ы → интересы
Keep the stored stem and add -ы.Accusative · Singularинтерес- + zero ending → интерес
Remove the zero ending; this form has a zero ending.Accusative · Pluralинтерес- + -ы → интересы
Keep the stored stem and add -ы.Genitive · Singularинтерес- + -а → интереса
Keep the stored stem and add -а.Genitive · Pluralинтерес- + -ов → интересов
Keep the stored stem and add -ов.Dative · Singularинтерес- + -у → интересу
Keep the stored stem and add -у.Dative · Pluralинтерес- + -ам → интересам
Keep the stored stem and add -ам.Instrumental · Singularинтерес- + -ом → интересом
Keep the stored stem and add -ом.Instrumental · Pluralинтерес- + -ами → интересами
Keep the stored stem and add -ами.Prepositional · Singularинтерес- + -е → интересе
Keep the stored stem and add -е.Prepositional · Pluralинтерес- + -ах → интересах
Keep the stored stem and add -ах.