• grandads,
• granddady,
• grandad,
• grandmars,
• granndads,
• grandkids,
• grandas,
• grandpas,
• grandsiers,
• franddads,
• vranddads,
• branddads,
• hranddads,
• yranddads,
• tranddads,
• geanddads,
• gdanddads,
• grand dads,
• gran dads,
• grandpaws

• grandmaster,
• grand mal,
• grand opera,
• Grandberry,
• grandness,
• grandee,
• grenada,
• Grand Canal,
• grand rapids,
• grand slam,
• grandma,
• groundsman,
• granddaddy,
• granddad,
• Grand Turk,
• GRANDE,
• Grand Teton,
• grandfield,
• grind away,
• grandad,
• grandniece,
• grandi,
• grandstander,
• grenade,
• grand mufti,
• grandparent,
• grandchild,
• grand fir,
• grandly,
• granados,
• grindle,
• granduncle,
• grandmother,
• granada,
• grand piano,
• grinder,
• grandson,
• grandiose,
• grand duke,
• grand prix,
• grunden,
• groundmass,
• granderson,
• grandnephew,
• granda,
• Grindelia,
• Granado,
• grundman,
• grenadian,
• grand island,
• ground,
• grandy,
• groundball,
• grand lama,
• Grundy,
• grandaunt,
• granted,
• grand tour,
• grandiosity,
• grundyism,
• grindstone,
• groundless,
• Granata,
• grindstaff,
• grandfather,
• grandiosely,
• grounds,
• groundfish,
• grand theft,
• grondin,
• grandeur,
• grand jury,
• grind down,
• Grande Dame,
• grand duchy,
• grandstaff,
• grandstand,
• groundsel,
• Grandison,
• grandpa,
• granadilla.

The adjective form of "granddads" is "grandfatherly".

The plural of the "granddads" can be the "granddads".

The singular of the "granddads" can be the "grand-dad".