Synonyms for Grandmother:

n.

granddaughter, grandaddy, grandchild, dowager, granddaddy, granddad, grandpa, ancestor, gram, grandfather, matriarch, maternal forebear. grandmother (noun)
gram, gran, grannie, maternal forebear, granny, dowager, matriarch, grandma, ancestor.
senior (noun)
grandfather.

Other synonyms:

granddaughter, granddaddy, grandpa, grandfather. granddad. progenitor
ancestor.
Other relevant words:
granddad, granddaddy, maternal forebear, grandfather, gram, dowager, grandaddy, ancestor, grandpa, granddaughter, matriarch.

Usage examples for grandmother

  1. Just then another voice said, " I bet you're taking your sick grandmother to the doctor's." – My Father's Dragon by Ruth Stiles Gannett
  2. " Not only to see your grandmother who has been very kind to me, but also to see you, who have not been at all kind to me," answered Ralph. – The Lilac Sunbonnet by S.R. Crockett
  3. Does not the Judge know that his grandmother is descended from the famous Becsky family and the like? – Heathen Master Filcsik by Kálmán Mikszáth