Poshlost' is the Russian version of banality, with a characteristic national flavoring of metaphysics and high morality, and a peculiar conjunction of the sexual and the spiritual. This one word encompasses triviality, vulgarity, sexual promiscuity, and a lack of spirituality. The war against poshlost' is a cultural obsession of the Russian and Soviet intelligentsia from the 1860s to 1960s.
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Sobornost, another untranslatable Russian word, referring to spiritual community (Boym 1994, p. 3) and thus opposed to an aspect of poshlost
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А ведь все Набоков виноват.