loon

• 名词，可指一种生活在北方地区的大型食鱼潜鸟（潜鸟科鸟类）；也可非正式地指被认为愚蠢、疯狂或懒惰的人。

A noun that can refer to a large fish-eating diving bird found in northern regions, or informally to a person considered foolish, crazy, or lazy.

1. Lazy or worthless personB2informal

   A person considered to be lazy, idle, or of little worth.

   懒汉

   • He's just a loon who never does any work.
   • Don't be such a loon; get up and help.
   • The old man called the young loafer a loon.

   同义词do-nothinggood-for-nothingidlerlayaboutlazybonesloaferslackersluggardwastrel

2. B1formal

   A large fish-eating diving bird of northern regions, known for its distinctive call.

   潜鸟

   • We saw a loon swimming on the lake.
   • The loon's call echoed across the water.
   • Loons are excellent divers and can stay underwater for a long time.

   同义词diver

3. Crazy or confused personB2informal

   A person who behaves in a strange, foolish, or irrational manner.

   疯子

   • He's a complete loon if he thinks that plan will work.
   • Only a loon would drive in this blizzard.
   • She acted like a loon at the party, dancing on the tables.

   同义词crackpoteccentriclunaticmadmanmaniacnutnutcaseweirdo

   反义词rationalistrealist