Why is the ninth month called September?
"wise," late 15c. (early 15c. as a surname), from Old French sapient, from Latin sapientem (nominative sapiens), present participle of sapere "to taste, have taste, be wise," from PIE root *sep- "to taste, perceive" (cf. Old Saxon an-sebban "to perceive, remark," Old High German antseffen, Old English sefa "mind, understanding, insight").