Artificial intelligent assistant

jest-earnest

ˈjest-ˈearnest Obs.
  In phr. in jest-earnest: in earnest under colour of jesting.

1642 Fuller Holy & Prof. St. v. ii. 362 Such blows in jest-earnest are most dangerous. 1660Mixt Contempl. (1841) 200 Hereupon one in jest-earnest said, that formerly they put down bishops and deans, and now they had put down chapters too.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC cb8a0ea1f84ba27c40f47ba3be3e2375