grandaddy

/ˈɡrændædi/
noun
  1. A casual or affectionate word for grandfather.
    • I learned to whistle from my grandaddy.
    • My grandaddy used to take me to the park every Saturday.
    • Grandaddy always has a piece of candy in his pocket for us.
  2. The oldest, largest, or most important example of something; the original or greatest of its kind.
    • This book is considered the grandaddy of modern science fiction.
    • That old oak tree is the grandaddy of all the trees in the park.
    • The grandaddy of all roller coasters was built over a hundred years ago.
What does "grandaddy" mean? | whatsthatwordmean | whatsthatwordmean