adv. [f. prec.] Inexpressibly, indescribably; unspeakably.
1746. Hervey, Refl. Flower Garden, 111. At that awful, that unutterably important Juncture.
1801. Coleridge, Lett. (1895), 352. I need not observe how unutterably silly and contemptible these opinions would be.
1866. Mrs. Whitney, Leslie Goldthwaite, xi. Ill thank you unutterably, if youll only let me have my way in this.
1885. Mrs. Alexander, At Bay, viii. The sweet eyes were unutterably sad.