"Here sighs, laments, and deep wailings resounded through the starless air." - Dante, The Inferno Luctus in English is grief - specifically the grief of mourning, the sorrow felt for the dead. It carries a heavier, more ceremonial weight than everyday sadness; it's lament, mourning, the visible expression of loss. Related to "lugubrious" in English. (mixed media by Rocketgirl)