adj. a sensation of taste, particularly that which is sharp and unpleasant. The taste, best described as acrid, is often associated with the intake of alkaloids, glycosides, and even some vitamins. At worst, it is also caused by toxic compounds and chemicals.
BITTER: "Bitter in taste as it is, the bitter gourd (Momordica charantia) is one of the most nutritious vegetables ever and its medicinal properties are widely used in Asia and India."