Artificial intelligent assistant

subteraqueous

subteraqueous, a. rare.
  (sʌbtəˈreɪkwɪəs)
  Also erron. subterr-.
  [f. L. *subteraqueus: see subter- (1) and aqueous.]
  Living, situated, performed, etc. under water.

1682 H. More Annot. Glanvill's Lux O. 139 By those inevitable Laws of the subteraqueous Sandalphon. 1733 Tull Horse-hoeing Husb. iii. 26 The Effect the vicissitudes of Winter and Summer have upon Subterraqueous Vegetables. 1823 Byron Juan xiv. lxxxi. ‘An oyster may be cross'd in Love,’—and why? Because he mopeth idly in his shell, And heaves a lonely subterraqueous sigh.

Oxford English Dictionary

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