Reconstruction:Proto-Slavic/-nikъ

Etymology
, cognate with 🇨🇬.

The form seems to be prevalent mainly in East and South Slavic. West Slavic uses instead (from ), e.g. 🇨🇬,.

Usage notes

 * In East Slavic, the suffix has been reanalyzed as duplication of, as in 🇨🇬,.
 * The related terms are significantly more productive than the current root-based suffix.