atypical

她对这个问题的反应很不寻常。

Her reaction to the problem was quite ___atypical.

这种鸟的羽毛颜色很不寻常，在同类中非常罕见。

The bird's ___atypical feather color is very rare among its species.

他今天穿西装来上班，这在他平时随意的着装中很不寻常。

He wore a suit to work today, which is ___atypical of his usual casual style.