Grandad or Granddad?

[LoopyLoops]

Making Christmas mugs, mind has gone blank... is it Grandad or Granddad?

[MmeLindt]

Granddad

I think.

[defineme]

the first-well that's what i did!

[Marrow]

I think you can actually use either.

[Tidey]

Granddad makes more sense, but Grandad looks better. More tidy. Heh.

[BarbaraSeville]

Grandad

[defineme]

oxford dictionary says first, but either acceptable

[whimsy]

Grandad

[FingonTheValiant]

I think it should be Granddad, but everyone I know spells it Grandad.

[TheNextMrsDepp]

Grandpa