Artificial intelligent assistant

grandad

grand-dad, grandad
  (ˈgrænddæd, ˈgrændæd)
  [See grand a. 12 b.]
  A childish or affectionate word for grandfather.

1819 Byron Juan ii. cxxxvii, His hardships were comparative To those related in my grand-dad's ‘Narrative’. 1865 Look before you leap I. 18 A ward of my granddad's. 1889 P. H. Emerson Eng. Idyls 17 Grandad, what did granny say?

  So gran(d-)dada = grand-dad.

1698 Farquhar Love & Bottle i. (1699) 6 And so you left them to Grand Dada! 1871 G. Meredith H. Richmond III. xii. 205 Her mind was simply obedient to her grandada's wish.

Oxford English Dictionary

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