listopadni (Serbo-Croatian) comes from Serbo-Croatian lȉstopād, from Proto-Slavic listopadъ, from Proto-Slavic pasti, from Proto-Balto-Slavic pāˀstéi, from Proto-Indo-European péh₂sti, from Proto-Indo-European peh₂- — to protect; to shepherd.
listopadni (Serbo-Croatian): deciduous