Dude seems to have developed from a pejorative epithet for a man about as far as possible from Jeff Bridges’s character as one could get. Grotesque came from a hole in the ground in Rome. Picturesque originally referred to actual pictures — specifically, a particular style of painting. Silhouette started as Louis XV’s treasury secretary, became a snippy insult, and only then came to refer to framed side-views of a person, cut from black paper. – BBC