colloq. [An arbitrary formation; perh. suggested by next.] Fantastic ornament; nonsense, tomfoolery.
1880. World of Cant, xxiv. 196. A girl is sure to keep up some of the old fandangle of her mother.
1887. Jessopp, Arcady, viii. 232. The tenor had a solo with no end of shakes and trills and fandangles.