Noun reference

письмо

letter

Neuter · Inanimate

Neuter -о family

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 письмо
Case Singular Plural
Nominative письмо письма
Accusative письмо письма
Genitive письма писем
Dative письму письмам
Instrumental письмом письмами
Prepositional письме письмах

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 · Singular письм- + -а → письма

Remove -о and add -а.

Show all case-build notes
Nominative · Singular письмо This is the dictionary form used to identify the noun.
Nominative · Plural письм- + -а → письма Remove -о and add -а.
Accusative · Singular письм- + -о → письмо Remove -о and add -о.
Accusative · Plural письм- + -а → письма Remove -о and add -а.
Genitive · Singular письм- + -а → письма Remove -о and add -а.
Genitive · Plural письмо → писем The stem changes in this stored form, so a simple ending replacement would be misleading.
Dative · Singular письм- + -у → письму Remove -о and add -у.
Dative · Plural письм- + -ам → письмам Remove -о and add -ам.
Instrumental · Singular письм- + -ом → письмом Remove -о and add -ом.
Instrumental · Plural письм- + -ами → письмами Remove -о and add -ами.
Prepositional · Singular письм- + -е → письме Remove -о and add -е.
Prepositional · Plural письм- + -ах → письмах Remove -о and add -ах.
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