ppl. a. (UN-1 8. Cf. Da. utappet.)

1

  In frequent use (esp. fig.) from c. 1890.

2

[1775.  Ash.]

3

1779.  Warner, in Jesse, Selwyn & Contemp. (1844), IV. 254. An untapped barrel of ale.

4

1863.  Bates, Nat. Amazons, I. 143. Untapped [india-rubber] trees still growing in the wilds.

5

1889.  C. Edwardes, Sardinia, 164. What a fund of mirth … lay untapped within him!

6