Artificial intelligent assistant

downmost

downmost, adv. and a.
  (ˈdaʊnməʊst)
  Also dial. downermost: cf. the obs. comparative downermore: see down adv. VIII.

1790 Blagden in Phil. Trans. LXXX. 342 So poised as that a certain part should be always downmost. 1822 Coleridge Lett., Convers., etc. II. 92 Set the jewel in the marriage ring with the speck downmost. 1849 Carlisle in Eng. Hist. Rev. (1886) I. 333 The early or downmost part of the sheets had mouldered. 1879 Geo. Eliot Theo. Such 307 A fowl tied head downmost.

Oxford English Dictionary

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