Where does “беспомоћно” come from?
беспомоћно (Serbo-Croatian) comes from Serbo-Croatian бе̏спомоћан, from Serbo-Croatian по̏мо̄ћ, from Proto-Slavic pomoťь, from Proto-Slavic moťь, from Proto-Indo-European mógʰtis, from Proto-Indo-European meǵʰ-.
беспомоћно (Serbo-Croatian): helplessly
Ancestry of “беспомоћно”, step by step