-ьникъ

• ⱐⱀⰻⰽⱏ (ĭnikŭ) — Glagolitic

From Proto-Slavic *-ьnikъ, itself originally by nominalization of adjectives in *-ьnъ with the suffix *-ikъ, morphologically equivalent to -ьнъ (-ĭnŭ) +‎ -икъ (-ikŭ).

-ьникъ • (-ĭnikŭ) m

1. Suffix appended to nominal stems to create a masculine noun, usually denoting a professional, performer, adherent, place, object, tool or a feature.

   ‎двьрь (dvĭrĭ, “двьрь”) + ‎-ьникъ (-ĭnikŭ) → ‎двьрьникъ (dvĭrĭnikŭ, “doorkeeper”)

   ‎исповѣдь (ispovědĭ, “confession”) + ‎-ьникъ (-ĭnikŭ) → ‎исповѣдьникъ (ispovědĭnikŭ, “supporter”)

   ‎кънига (kŭniga, “book”) + ‎-ьникъ (-ĭnikŭ) → ‎кънижьникъ (kŭnižĭnikŭ, “scribe”)

   ‎пѫть (pǫtĭ, “way, path, road”) + ‎-ьникъ (-ĭnikŭ) → ‎пѫтьникъ (pǫtĭnikŭ, “traveler”)

• -ьница (-ĭnica)
• -икъ (-ikŭ)
• -ица (-ica)