Reconstruction:Proto-Slavic/si

This Proto-Slavic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.

Proto-Slavic

Etymology 1

See the etymology of the corresponding lemma form.

Pronoun

*si

1. dative of *sę (“oneself”)

   Synonym: *sebě

Declension

Proto-Slavic personal pronouns

Singular	1st person	2nd person	Reflexive
Nominative	*jãzъ, *jà	*ty̑	—
Accusative	*mę̑	*tę̑	*sę̑
Genitive	*mȅne	*tȅbe	*sȅbe
Locative	*mьně̀	*tebě̀	*sebě̀
Dative	*mьně̀, *mi	*tebě̀, *ti	*sebě̀, *si
Instrumental	*mъnòjǫ, *mъnojǫ̀	*tobòjǫ, *tobojǫ̀	*sobòjǫ, *sobojǫ̀
Possessive	*mojь	*tvojь	*svojь
Dual	1st person	2nd person	Reflexive
Nominative	*vě̑	*vȃ	—
Accusative	*nȃ	*vȃ	*sę̑
Genitive	*nàju	*vàju	*sȅbe
Locative	*nàju	*vàju	*sebě̀
Dative	*nàma, *na	*vàma, *va	*sebě̀, *si
Instrumental	*nàma	*vàma	*sobòjǫ, *sobojǫ̀
Possessive	*našь	*vašь	*svojь
Plural	1st person	2nd person	Reflexive
Nominative	*my̑	*vy̑	—
Accusative	*ny̑	*vy̑	*sę̑
Genitive	*nàsъ	*vàsъ	*sȅbe
Locative	*nàsъ	*vàsъ	*sebě̀
Dative	*nàmъ, *ny	*vàmъ, *vy	*sebě̀, *si
Instrumental	*nàmi	*vàmi	*sobòjǫ, *sobojǫ̀
Possessive	*našь	*vašь	*svojь

Descendants

• East Slavic:
  • Old East Slavic: си (si)
• South Slavic:
  • Old Church Slavonic: си (si)
    • Church Slavonic: си (si)
  • Bulgarian: си (si)
  • Macedonian: си (si)
  • Serbo-Croatian:

    Cyrillic script: си

    Latin script: si

  • Slovene: si
• West Slavic:
  • Czech: si
  • Slovak: si

Etymology 2

From *sь (“this”). Compare synonymous Russian -то (-to) ultimately from *tъ (“that”).

Particle

*si

1. Indicates that something is indefinite or uncertain.

Descendants

• East Slavic:
  • Old East Slavic: си (si)
    • Belarusian: -сь (-sʹ)
    • Ukrainian: -сь (-sʹ)
    • Russian: -сь (-sʹ) (dialectal)
• South Slavic:
  • Bulgarian: си (si)
  • Slovene: -si
• West Slavic:
  • Old Czech: -si
    • Czech: -si
  • Kashubian: -s
  • Old Polish: -ś
    • Polish: -ś
  • Slovak: -si
  • Slovincian: -sz