Granddaddy Definition
 grandadē 
  grandaddies, granddaddies
  
    noun
  
 
    granddaddies
  
Webster's New World 
A grandfather.
 American Heritage 
The biggest or best of its kind.
 Webster's New World 
The first or oldest of its kind.
 Webster's New World 
Synonyms: 
  Other Word Forms of Granddaddy
Noun
Singular:
 granddaddyPlural:
 granddaddiesOrigin of Granddaddy
-  
Diminutive of granddad.
From Wiktionary
 
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