1. Any of numerous European and North American birds having pointed wings and a long tail
   "We heard the distinctive call of a cuckoo in the woods"
    
2. [informal] Someone who is a stupid incompetent fool
   "Don't be such a cuckoo; think before you act";
   - fathead [informal], goof [informal], goofball [N. Amer, informal], bozo [N. Amer, informal], jackass [informal], goose [informal], zany [informal]

1. Insane, strange, eccentric or stupid
   "Don't listen to him, he's cuckoo";
   - balmy [archaic, slang], barmy [slang], bats [slang], batty [slang], bonkers [slang], buggy [N. Amer, slang], cracked [slang], crackers [slang], daft [Brit, slang], dotty [Brit, slang], fruity [slang], haywire [slang], kooky [slang], kookie [slang], loco [slang], loony [slang], loopy [slang], nuts [slang], nutty [slang], round the bend [slang], around the bend [slang], wacky [slang], whacky [slang], daffy [slang], dippy [slang], doolally [Brit, slang], wacko [slang], daft as a brush [Brit, slang], potty [Brit, slang], round the twist [Brit, slang], dumbass [N. Amer, slang], nutsy [N. Amer, slang], barking mad [Brit, slang], mental [slang], barking [Brit, slang], bughouse [N. Amer, slang]

1. Repeat monotonously, like a cuckoo repeats its call
   "The child cuckooed the same question over and over"

Derived forms: cuckooing, cuckooed, cuckoos

See also: insane

Type of: boofhead [Austral, informal], charlie [Brit, informal], cuculiform bird, diddy [Brit, informal], dill [Austral, NZ, informal], drongo [Austral, NZ, informal], echo, fool, galah [Austral, informal], juggins [Brit, informal], jughead [N. Amer, informal], mampara [S.Africa, informal], meathead [informal], moegoe [S.Africa, informal], muggins [Brit, informal], nit [Brit, informal], repeat, sap [N. Amer, informal], tomfool

Part of: Cuculidae, family Cuculidae

Encyclopedia: Cuckoo, Tasmania