Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for форма
Case
Singular
Plural
Nominative
форма
формы
Accusative
форму
формы
Genitive
формы
форм
Dative
форме
формам
Instrumental
формойLong instrumental variant:формоюAccepted in practice
формами
Prepositional
форме
формах
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 · Singularформ- + -ы → формы
Remove -а and add -ы.
Show all case-build notes
Nominative · Singularформа
This is the dictionary form used to identify the noun.Nominative · Pluralформ- + -ы → формы
Remove -а and add -ы.Accusative · Singularформ- + -у → форму
Remove -а and add -у.Accusative · Pluralформ- + -ы → формы
Remove -а and add -ы.Genitive · Singularформ- + -ы → формы
Remove -а and add -ы.Genitive · Pluralформ- + zero ending → форм
Remove -а; this form has a zero ending.Dative · Singularформ- + -е → форме
Remove -а and add -е.Dative · Pluralформ- + -ам → формам
Remove -а and add -ам.Instrumental · Singularформ- + -ой → формой
Remove -а and add -ой.Instrumental · Pluralформ- + -ами → формами
Remove -а and add -ами.Prepositional · Singularформ- + -е → форме
Remove -а and add -е.Prepositional · Pluralформ- + -ах → формах
Remove -а and add -ах.