used to describe something as another, more exciting, interesting, or unusual thing, as a way of emphasizing its character

My garden had become a veritable jungle by the time I came back from holiday. 我度假回来的时候，我的花园简直是杂草丛生。

The normally sober menswear department is set to become a veritable kaleidoscope of colour this season. 色调通常都比较暗淡的男装部这一季将会成为名副其实的色彩万花筒。