Artificial intelligent assistant

submergement

subˈmergement
  [f. submerge v. + -ment.]
  Submersion.

1856 Olmsted Slave States 524 When free from the social submergement and weight of disgrace which disabled them in England. 1884 Daily News 16 Sept. 5/7 With its incessant vibration and its state of almost continuous submergement, it is miserably uncomfortable for the crew.

Oxford English Dictionary

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