-икъ

• -ⰻⰽⱏ (-ikŭ) — Glagolitic

From Proto-Slavic *-ikъ.

-икъ • (-ikŭ) m

1. -er, -or; Deadjectival nominalizing suffix used chiefly to create a masculine agent noun from adjectives in -ин- and passive participles in -ен-.
   • грѣшьнъ (grěšĭnŭ, “sinful”) + -икъ (-ikŭ) → грѣшьникъ (grěšĭnikŭ, “sinner”)

   Isolated example is златикъ (zlatikŭ, “gold coin”), which has the suffix appended directly to the root злато (zlato, “gold”), and has diminutive (or singulative) meaning.

• -ьникъ (-ĭnikŭ)
• -тель (-telĭ)
• -арь (-arĭ)