big craze; boom; popular trend; widespread contagion; large outbreak
out of fashion; out of style; outmoded
buzzword; vogue word; popular phrase
fashionable color; fashionable colour
infected district; infected area; endemic area
popular singer; singer of pop songs
the principle of fluidity and immutability in haiku; haiku is both fluid and transitory, and eternal and immutable; an interchange between the transient and the immutable is central to the soul of haiku
the cream (pink) of fashion