a. (UN-1 7 b.)

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1611.  Cotgr., Imbuvable, vndrinkable, unfit to be drunke of.

2

1826.  Disraeli, V. Grey, VI. i. We … refrain from refreshing our bodies with that sanctified and most undrinkable fluid.

3

1880.  Geikie, Phys. Geog., iii. 107. Should he taste some of this … water he would find it salt and undrinkable.

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  Hence Undrinkably adv.

5

1894.  Pall Mall Mag., Nov., 455. It [sc. coffee] was not undrinkably bad.

6