The unexpectedness of my father's death meant that his affairs were not entirely in order.

我父亲的意外过世意味着他的个人事情不是完全有序。

《柯林斯英汉双解大词典》

Note this appears to conflict with unexpectedness above.

注意：这似乎与上述冲突始料未及。

youdao

The sheer unexpectedness of it made my hair stir under my cap.

这猝不及防的惊变，使我帽子下面的头发都竖起来。

youdao

"The unexpectedness and the inability of people to adjust quickly caused problems, " says Huntington.

FORBES: Magazine Article

"I was so re-traumatized from the unexpectedness of seeing him that I removed myself from training and immediately sought out the assistance from an Army chaplain who told me, among other things, that the rape was God's will and that God was trying to get my attention so that I would go back to church, " she testified.

CNN: Military rape victims: Stop blaming us