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Etymology tree Proto-Indo-European *per-der.? Proto-Indo-European *per-der.? Proto-Indo-European *pér Proto-Indo-European *-o Proto-Indo-European *próder. Ancient Greek πρό (pró) Ancient Greek προ- (pro-) Proto-Indo-European *gʷelH-der. Proto-Hellenic *gʷəlnō Ancient Greek βάλλω (bállō) Ancient Greek προβάλλω (probállō) Proto-Indo-European *-mn̥ Proto-Hellenic *-mə Ancient Greek -μᾰ (-mă) Ancient Greek πρόβλημα (próblēma)bor. Latin problēmabor. Middle French problemebor. Middle English probleme English problem From Middle English probleme, from Middle French probleme, from Latin problēma, from Ancient Greek πρόβλημα (próblēma, “anything thrown forward, hindrance, obstacle, anything projecting, a headland, promontory”), from προβάλλω (probállō, “to throw or lay something in front of someone, to put forward”), from προ- (pro-, “in front of”) + βάλλω (bállō, “to throw, to cast, to hurl”). Doublet of problema.