Reconstruction:Proto-Slavic/ni-

Negating prefix applied specifically on pronouns, most certainly of the same origin as Proto-Slavic *ni (“neither, not even”).

*ni-

1. no- (with interrogatory pronouns)

• *nikъ(jь) (“nobody”), *ničьjь (“nobody's”)
• *nikъto, *ničьto (“nothing”)
• *nikъterъ (“none, nobody”)
• *nikakъ (“in no way”)
• *nikoli (“for nothing”)
• *nikogъda (“never”)
• *nikъde (“nowhere”)
• *nikǫda (“to nowhere”)

• East Slavic:
  • Belarusian: ні- (ni-)
  • Russian: ни- (ni-)
  • Ukrainian: ні- (ni-)
• South Slavic:
  • Old Church Slavonic: ни- (ni-)
  • Bulgarian: ни́- (ní-)
  • Macedonian: ни- (ni-)
  • Serbo-Croatian:

    Cyrillic: ни̏-

    Latin: nȉ-

  • Slovene: ni-
• West Slavic:
  • Czech: ni-
  • Polish: ni-
  • Slovak: ni-
  • Sorbian:
    • Lower Sorbian: ni-
    • Upper Sorbian: ni-

• Trubachyov, Oleg, editor (1999), “*ničьjь”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 111
• Trubachyov, Oleg, editor (1999), “*ničьto”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 112
• Trubachyov, Oleg, editor (1999), “*nikako/*nikakъ(jь)”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 113
• Trubachyov, Oleg, editor (1999), “*nikogъda”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 115
• Trubachyov, Oleg, editor (1999), “*nikoli”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 116
• Trubachyov, Oleg, editor (1999), “*nikǫda”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 116
• Trubachyov, Oleg, editor (1999), “*nikъde”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 118
• Trubachyov, Oleg, editor (1999), “*nikъ(jь)”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 119
• Trubachyov, Oleg, editor (1999), “*nikъterъ(jь)”, in Этимологический словарь славянских языков [Etymological Dictionary of Slavic Languages] (in Russian), issue 25 (*neroditi – *novotьnъ(jь)), Moscow: Nauka, →ISBN, page 119