loony

疯的、神经的口语，贬义

His neighbors think he's completely loony for talking to plants.

邻居都觉得他会跟植物讲话是疯了。

荒唐的、离谱的口语

The company came up with another loony plan to cut costs.

公司又想出一个荒唐的省钱计划。

疯子、怪人口语，贬义

Some loony was shouting at cars in the middle of the road.

有个疯子站在马路中间对著车子大吼。