English

Proper noun

Daffy

1. A diminutive of the female given name Daphne or Daffodil.
   • 1983 Mary Downing Hahn, Daphne's Book, Houghton Mifflin Harcourt, ISBN 0899191835, page 5:

     The name Daffy stuck, and to make it worse, Tony added "Duck" as an afterthought. For weeks, he led all the other kids in a chorus of quacks whenever Daphne appeared, but she ignored them.

   • 1997 Emily Dalton, Wake Me With a Kiss, Harlequin, ISBN 0373166850, page 11:

     "Call me Daffy," Daffodil interrupted with a demure smile.

2. A surname​, derived from the Welsh equivalent of David.

English

Adjective

daffy ‎(comparative daffier, superlative daffiest)

1. a little crazy
   • 1899, Willa Cather, The Westbound Train

     Now I'm hungry as a Rocky Mountain lion so come, let's go and get this poor, daffy, tealess widow and wine and dine with her and make it all up.

   • 1909, Gene Stratton-Porter, A Girl of the Limberlost, ch. 1

     "You've gone so plum daffy you are forgetting your dinner," jeered her mother.

   • 1922, F. Scott Fitzgerald, O Russet Witch!, ch. 4

     He was daffy about her and she could twist him around her little finger.

Synonyms

• nutty as a fruitcake

Etymology 2

Noun

daffy ‎(plural daffies)

1. (informal) A daffodil.