noun, plural grand·pap·pies. Dialect.
Examples from the Web for grandpappy
Grandpappy Ryan did exactly what Obama says other people did to help small businesses thrive.
I was the only one what your grandpappy would let hunt in his garden.Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves|Work Projects Administration
My grandpappy told my pappy, who told me, who told you, that Old Joe's been hunted by every Mundee.The Duck-footed Hound|James Arthur Kjelgaard
So I'm glad you did find you a general to sling some weight an' git us into his scouts jus' 'cause he knew your grandpappy.
Don't remembah my grandmammy and grandpappy, but my master was they master.Slave Narratives, Oklahoma|Various
Sounds like your grandpappy had a burr under his tail an' bucked it out on you.