Grossvater, Opa
granddad, grandpa, or grandfather = saba (סבא)
"Opa" is a term for grandfather in German and some other European languages like Dutch and Danish.
Another compound word for grandfather is granddad.
He became a Grandfather this off-season, becoming the first grandfather playing in the NFL.
Großpapa
He would be your great, great grandfather, but you could call him whatever endearing name you and he prefer -- Granddad, Papa, Grandpa, etc.
Grandmother is Yia-Yia and Grandfather is Pa-Pou. Grandfather can also be Bapi.
"Poppy" is a commonly used equivalent to "nana" for a grandfather. Other options include "Pops," "Papa," or "Granddad."
Opa Opapa Großvater
"Saba" in Hebrew translates into English as "grandfather" or "granddad" or "grandpa."
Most people call their grandfather granddad. Some use grandpop or just pop.
Roald Dahl's grandfather, Anders Ingvald Dahl, was born on November 5, 1841.