Artificial intelligent assistant

grandmaternal

grandmaternal, a. Somewhat jocular.
  (ˌgrændməˈtɜːnəl)
  [f. grand a. + maternal a.]
  Of, pertaining to, or befitting a grandmother; grandmotherly.

1790–1811 Combe Devil upon Two Sticks (1817) I. 260 Maternal or grand-maternal pleasures will not, I fear, compose any part of the happiness of her life. 1862 Sat. Rev. 8 Feb. 155 In spite of paternal protests and grand⁓maternal tears, the fatal miscalculation was expiated on the block. 1880 G. Meredith Tragic Com. vii. (1892) 91 He named a grandmaternal date for the year of the baroness's birth.

Oxford English Dictionary

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