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Noun: granddaddy  'gran,da-dee
  1. The father of your father or mother
    - grandfather, gramps, granddad, grandad, grandpa, grandaddy [N. Amer, informal], grandpapa [archaic]
  2. [informal] The first, or best, most important, or largest example of a particular thing
    - grandaddy [informal]

Derived forms: granddaddies

Type of: grandparent

Encyclopedia: Granddaddy