gratuitous

1. ADJ If you describe something as gratuitous, you mean that it is unnecessary, and often harmful or upsetting. 不必要的

There's too much crime and gratuitous violence on TV. 电视上充斥着过多的犯罪与无端的暴力。

2. gratuitouslyADV 不必要地

They wanted me to change the title to something less gratuitously offensive. 他们想让我把标题改得不那么过于无礼。