Artificial intelligent assistant

sextress

ˈsextress, -trice Obs. rare.
  [f. sexton by substitution of the suffixes -tress, -trice. Cf. next.]
  = sextoness.

a 1400 Minor Poems fr. Vernon MS. 138 note, Hou vre lady dude þe offys of a sextresse fyftene ȝeer for a nonne. 1476 Crabhouse Reg. (1889) 11 The mony..remaynyd..to the profiht of the sextrice.

Oxford English Dictionary

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