The term 'Stylish, Sixties Style' can be summarized by the crossword solution MOD, which is a three letter acronym. MOD stands for Modernism, which was a cultural movement that began in the 1950s and lasted until the mid-1970s. It was characterized by a rejection of traditional values and an embrace of youth culture, fashion, and music. The style was popularized in the 1960s, and it was characterized by bright colors, geometric patterns, and bold prints.