Why is the ninth month called September?
1727, from French troubadour "one of a class of lyric poets in southern France, eastern Spain, and northern Italy 11c.-13c.," from Old Provençal trobador, from trobar "to find," earlier "invent a song, compose in verse," perhaps from Vulgar Latin *tropare "compose, sing," especially in the form of tropes, from Latin tropus "a song" (see trope). The alternative theory among French etymologists derives the Old Provençal word from a metathesis of Latin turbare "to disturb," via a sense of "to turn up." Meanwhile, Arabists posit an origin in Arabic taraba "to sing." General sense of "one who composes or sings verses or ballads" first recorded 1826.