Artificial intelligent assistant

anchesoun

anchesoun Obs.
  3–4. Also ancheisun, -esun. -eysone, -eaysoun.
  [refashioning of achesoun, a. OFr. acheson, acheison:—L. occāsiōn-em, after words in a- for earlier an-, en-. This began in AFr., where enchesoun is commoner than the orig. achesoun. See also encheason, the common later form in Eng.]
  Occasion, cause, reason, motive.

c 1230 Ancr. R. 158 And seið þe ancheisun hwi. Ibid. 234 Þe þridde anchesun is. 1340 Ayenb. 47 Vor be þe ancheysoun of ham byeþ uorlore manye zaules.

Oxford English Dictionary

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