Where does “жестокосердый” come from?

жестокосердый (Russian) comes from Russian се́рдце, from Old East Slavic сьрдьце, from Proto-Slavic sьrdьce, from Proto-Balto-Slavic śirˀdís, from Proto-Indo-European ḱḗr — heart.

жестокосердый (Russian): cruel-hearted

Definitions

  1. cruel-hearted

Ancestry of “жестокосердый”, step by step

жестокосердый traces back through two separate lines of ancestry.

via Russian се́рдце

StepLanguageWordMeaning
1Russianсе́рдцеheart
2Old East Slavicсьрдьцеheart
3Proto-Slavicsьrdьceheart
4Proto-Balto-Slavicśirˀdísheart
5Proto-Indo-Europeanḱḗrheart

via Russian жесто́кий

StepLanguageWordMeaning
1Russianжесто́кийcruel
2Old East Slavicжестокъ—
3Proto-Slavicžestokъstern, hard, stiff, rigid (for material)
Every word from Proto-Indo-European ḱḗr →Every word from Proto-Balto-Slavic śirˀdís →Every word from Proto-Slavic sьrdьce →