反义词前缀加un+silent ，中文意思是adj，不太沉默的

例如

The soldiers were silent， and looked at Alice， as the question was evidently meant for her.士兵们都沉默不语，看着爱丽丝，因为这个问题显然是问爱丽丝的。

We sat at the dinner table in silence， preferring that to speaking in a difficult language.