Noun reference

окно

window, windowsill

Neuter · Inanimate

Neuter -о family · Special pattern

Case paradigm

Singular and plural together

Compare each case across both numbers. The forms below are the noun's stored reference paradigm.

Singular and plural case forms for окно
Case	Singular	Plural
Nominative	окно	окна
Accusative	окно	окна
Genitive	окна	окон
Dative	окну	окнам
Instrumental	окном	окнами
Prepositional	окне	окнах

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.

Nominative · Plural окно → окна

This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Show all case-build notes

Nominative · Singular окно This is the dictionary form used to identify the noun.

Nominative · Plural окно → окна This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Accusative · Singular окно → окно This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Accusative · Plural окно → окна This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Genitive · Singular окно → окна This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Genitive · Plural окно → окон This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Dative · Singular окно → окну This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Dative · Plural окно → окнам This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Instrumental · Singular окно → окном This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Instrumental · Plural окно → окнами This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Prepositional · Singular окно → окне This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.

Prepositional · Plural окно → окнах This form belongs to a reviewed special pattern, so it is shown as a stored form rather than a guessed suffix swap.