Where does “косяк” come from?

косяк (Ukrainian) comes from Russian -я́к, from Russian -а́к, from Old East Slavic -акъ, from Proto-Slavic -akъ — Deadjectival, forming nouns denoting a carrier of...

косяк (Ukrainian): jamb, cant, cheek, door-post

Definitions

  1. jamb, cant, cheek, door-post

Ancestry of “косяк”, step by step

StepLanguageWordMeaning
1Russian-я́кer
2Russian-а́кsuffix usually denoting a person with a given characteristic, or an inanimate noun of various meanings; often of a colloquial nature
3Old East Slavic-акъ—
4Proto-Slavic-akъDeadjectival, forming nouns denoting a carrier of...
Every word from Proto-Slavic -akъ →Every word from Russian -а́к →Every word from Russian -я́к →