a. Rather or somewhat bitter. Hence Bitterishness sb.
1605. Timme, Quersit., II. vii. 141. The bitterish Guaiacum.
1684. Bunyan, Pilgr., II. 194. The Water tasted a little Bitterish to the Palat.
184952. Todd, Cycl. Anat. & Phys., IV. 858/1. A slightly bitterish sensation is produced.
1702. Floyer, in Phil. Trans., XXIII. 1164. Its taste, which is crude and styptic, with a bitterishness in the Seed.