Artificial intelligent assistant

um'h

umh, um'h
  obs. varr. of um or umph.

1614 J. Cooke Greene's Tu Quoque B 4, Bub. Vmh, vmh, vmh. 1616 S. S. Honest Lawyer iv. G 1, Vm'h, my doubts Wrappe me in further maze. 1668 Dryden Evening's Love iv, Umh! thou awaken'st a most villainous apprehension in me! 1702 Farquhar Inconstant ii. i, Umh.—before that any young..Rakelly Fellow shou'd play such Tricks with me, I wou'd wear my Teeth to the stumps. 1740 Cibber Apol. (1756) II. 31 With a slow hesitation..he reply'd—Umh! the best—umh!—I have tasted a great while.

Oxford English Dictionary

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