Where does “kochajka” come from?

kochajka (Polish) comes from Polish -ka, from Old Polish -ka, from Proto-Slavic -ъka, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

Ancestry of “kochajka”, step by step

StepLanguageWordMeaning
1Polish-kafeminine noun suffix; diminutive noun suffix;...
2Old Polish-kafeminine noun suffix
3Proto-Slavic-ъkaDenominal, forms diminutives; Deadjectival,...
4Proto-Indo-European-kosCreates deadjectival and desubstantival...
Every word from Proto-Indo-European -kos →Every word from Polish -ka →Every word from Proto-Slavic -ъka →