Freak, monster

Freak, freakish.

Sao có chuyện quái thế

Why is there such a freakish story?

Mischievous.

Nghịch quái

To play mischievously, to get into mischief.

[Not] at all.

Chẳng hiểu quái gì

To understand nothing at all.

Làm quái gì việc vặt ấy

Such a trifling thing does not matter at all.

How strange, how unusual, how old.

Quái hôm qua còn khỏe thế mà hôm nay đã chết !

How odd, he was so healthy yesterday and to day he is dead!