Artificial intelligent assistant

oddsman

ˈoddsman Sc. Obs.
  In 6 odisman, odsman.
  [Alteration of odd man (odd a. 1): cf. thirdsman, daysman, etc.]
  An umpire, an arbiter.

1581 Sc. Acts Jas. VI (1814) III. 230/1 Referrit be the saidis parteis..to our souerane lord as ouris man and odisman. 1583 Decreet Arbitral of Jas. VI Gov. Edinb. (1742) 8 Ods-man and Overs-man, commonly chosen be Advice and Consent of baith the saids Parties.

Oxford English Dictionary

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