köken: From Latin diatriba (“learned discussion or discourse”), from Ancient Greek διατριβή (diatribḗ, “way of spending time, lecture”), from διά (diá, “through”) + τρίβω (tríbō, “to waste, wear out”).
Borrowed from Latin Suada, the Roman goddess of persuasion, in the 17th century; from Latin suādus (“persuasive”); from Latin suādeō (“I urge, exhort; I suade, persuade”).