noun
grandfather
The father of someone's parent.
My grandfather tells me stories about my mother's childhood.
Etymology
Grand- extends the parent relationship back one generation. A grandfather is therefore the father of either parent.
More examples
- Her grandfather is her father's father.
- Both of my grandfathers live nearby.
- We visit our grandfather every Sunday.
Forms
grandfather · grandfathers
grandfatherly adjective — Kind or caring like a grandfather.
Similar words
- grandpa
- An informal, affectionate word for the same family relationship.
- granddad
- A familiar term often used when addressing a grandfather.