Where does “троудьнъ” come from?

троудьнъ (Old Church Slavonic) comes from Old Church Slavonic троудъ, from Proto-Slavic trudъ, from Proto-Indo-European trewd- — to push, to thrust.

троудьнъ (Old Church Slavonic): hard, heavy, difficult

Definitions

  1. hard, heavy, difficult

Ancestry of “троудьнъ”, step by step

StepLanguageWordMeaning
1Old Church Slavonicтроудъlabour
2Proto-Slavictrudъlabour, effort
3Proto-Indo-Europeantrewd-to push, to thrust
Every word from Proto-Indo-European trewd- →Every word from Proto-Slavic trudъ →Every word from Old Church Slavonic троудъ →