чьто

From Proto-Slavic *čьto. Formed with a particle attached to *čь, Proto-Balto-Slavic *ki, from Proto-Indo-European *kʷid, *kʷis.

чьто • (čĭto)

1. what (interrogative)

* Forms in parentheses are alternative forms that are occasionally seen.

• ничьто (ničĭto)
• нѣчьто (něčĭto)
• къто (kŭto)

From Proto-Slavic *čьto. Cognates include Old Church Slavonic чьто (čĭto) and Old Polish czso.

• (ca. 9^th CE) IPA^(key): /t͡ɕɪˈtɔ/
• (ca. 11^th CE) IPA^(key): /t͡ɕɪˈtɔ/
• (ca. 13^th CE) IPA^(key): /ˈt͡ɕtɔ/
• Hyphenation: чь‧то

чьто (čĭto)

1. (interrogative) what?
2. (relative) what, that
   • 1076, Sviatoslav's izbornik‎, page 2:

     нъ пораꙁоумѣи чьто гл҃ють книгꙑ и словеса та·

     nŭ porazuměi čĭto gl:jutĭ knigy i slovesa ta·

     but understand what the books say and the words, too

• Old Ruthenian: што (što)
  • Belarusian: што (što), шо (šo) (nonstandard)
  • Carpathian Rusyn: што (što)
  • Ukrainian: що (ščo), шо (šo) (dialectal), што (što) (dialectal)
• Russian: что (što), шо (šo) (nonstandard)

• Sreznevsky, Izmail I. (1912) “чьто”, in Матеріалы для Словаря древне-русскаго языка по письменнымъ памятникамъ [Materials for the Dictionary of the Old East Slavic Language Based on Written Monuments]‎ (in Russian), volumes 3 (Р – Ꙗ и дополненія), Saint Petersburg: Department of Russian Language and Literature of the Imperial Academy of Sciences, column 1579