Artificial intelligent assistant

irrazable

† iˈrrazable, a. Obs. rare—1.
  [f. ir-2 + raze + -able. Cf. erasable.]
  That cannot be razed or erased.

1622 H. Sydenham Serm. Sol. Occ. ii. (1637) 74 That sinne then is irrazable which is so steeled with custom.

Oxford English Dictionary

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