Artificial intelligent assistant

unlest

unˈlest
  obs. var. unless. (Cf. unleast.)

1535 in Lett. Suppress. Monast. (Camden) 91 The dean wolde not resign unto hym, unleste he wolde leffe hym other possessions. 1583 Stubbes Anat. Abus. ii. C 8 b, May subiects..rise against their prince? No, at no hand, vnlest they will purchase to themselues eternall damnation. 1599 Thynne Animadv. (1875) 19 Difference of armes semethe a difference of famelyes, vnleste you canne prove that..they altered their armes vppone somme iuste occasione.

Oxford English Dictionary

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