Grandad/ˈɡrændæd/ Definition 1 of 2Pro Tip 1/3Family Term Used specifically to refer to a direct ancestor, two generations above you. I'm visiting my grandad this weekend. Pro Tip 2/3Endearment Conveys affection and familiarity when referencing your grandfather. I've got the best grandad ever! Pro Tip 3/3Cultural Variations Some cultures have unique names or titles for grandfathers that can be used synonymously. In my culture, we call our grandad 'abuelo'.