adv. [f. prec.] Inexpressibly, indescribably; unspeakably.

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1746.  Hervey, Refl. Flower Garden, 111. At that awful, that unutterably important Juncture.

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1801.  Coleridge, Lett. (1895), 352. I need not observe … how unutterably silly and contemptible these opinions would be.

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1866.  Mrs. Whitney, Leslie Goldthwaite, xi. I’ll … thank you unutterably, if you’ll only let me have my way in this.

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1885.  ‘Mrs. Alexander,’ At Bay, viii. The sweet eyes were unutterably sad.

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