spiffing
spif fing |ˈspifiNG ˈspɪfɪŋ | ▶adjective Brit. informal, dated excellent; splendid: how spiffing you look! ORIGIN late 19th cent.: of unknown origin.
spiffing |ˈspɪfɪŋ | ▶adjective Brit. informal, dated excellent; splendid: it's a frightfully spiffing idea. ORIGIN late 19th cent.: of unknown origin.