Artificial intelligent assistant

impregnably

impregnably, adv.
  (ɪmˈprɛgnəblɪ)
  [f. as prec. + -ly2.]
  In an impregnable manner; so as to be impregnable; invincibly, unconquerably.

1602 Marston Ant. & Mel. Induct., Wks. 1856 I. 5 So impregnably fortrest with his own content. 1661 J. Stephens Procurations 26 They make that Custome..impregnably strong. a 1711 Ken Anodynes Poet. Wks. 1721 III. 445 Patient, resign'd, and humble Wills, Impregnably resist all Ills. 1821 Shelley Hellas 1004 If Greece must be A wreck, yet shall its fragments re-assemble, And build themselves again impregnably In a diviner clime.

Oxford English Dictionary

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