малоду́шный (Russian) comes from Russian малодушие, from Russian дух, from Proto-Slavic duxъ, from Proto-Balto-Slavic daušás, from Proto-Indo-European dʰews-, from Proto-Indo-European dʰew- — to die, pass away; to run, flow.
малоду́шный (Russian): faint-hearted, cowardly, craven