a. (UN-1 7 b.)

1

  In common use from c. 1855.

2

1666.  Tillotson, Rule of Faith, I. iii. § 9. 31. Unmistakeable, indefectible Oral Tradition.

3

a. 1834.  Coleridge, Biogr. Lit. (1847), I. 305. In Nature … there are unmistakeable foretokens of Evil.

4

1840.  Hood, Up Rhine, 242. The unmistakeable Roman features of the Centurion.

5

1860.  Tyndall, Glac., 390. The veins … cutting each other at an unmistakeable angle.

6

  Hence Unmistakableness.

7

1866.  Grosart, in Lismore Papers, Introd. 13. The frankness and unmistakableness with which facts are given.

8