纳闷儿 (nà mènr): สายพันธุ์ erhua ของ 納苦|สงสัย [na4 men4]

He clearly said he would come today, but after waiting all afternoon there was still no sign of him; I felt a bit puzzled.

I was quite puzzled to see the neighbor's dog barking at the empty yard; later I discovered a cat hiding in the bushes.

She is usually cheerful, but today she didn't say a word; everyone was quite puzzled, not knowing what had happened.

What puzzles me is that the weather forecast clearly said no rain, so why did it suddenly start pouring?