an imaginary acrid modification for the blood, lymph, etc., which by the humorists was conceived resulting in many conditions. Synonyms Acrimony, Asperity, Harshness, Severity, Tartness, Sourness, Bitterness, Virulence, Rancor, acerbity, crabbedness, irascibility. (See harshness.) These terms present various quantities of extreme sensation, language, or conduct, their particular signification becoming determined largely by their particular derivation and primary use. Tartness is the mildest term, using typically to language; it indicates some wit or quickness of brain, and maybe a willingness to display it. As tartness could be the subacid top-notch head, so acrimony is its acidity; it's a biting sharpness; it might or may not continue from a nature permanently soured. Sourness may be the Anglo-Saxon for acrimony, with additional recommendation of permanent high quality — sourness of appearance or language proceeding from a sour nature. Bitterness, which will be founded upon a kindred figure, is sourness with some rancor; it is much more positive and hostile. Sourness and bitterness contain less malignity than acrimony. Virulence rises to a top amount of malignity, and rancor to these types of a height as virtually to split down self-control; the whole nature is envenomed, rancid. These terms are rarely placed on perform; asperity and harshness, being created upon a different figure, are naturally and frequently therefore applied; they convey the concept of roughness to touch. Asperity may be the lighter of two; it is a roughness of manner, and may even function as outcome of fury; it's a sharper advantage than harshness. Harshness is the most relevant to carry out, needs, etc., of all number; it could proceed from insensibility to other individuals' emotions or rights. Severity has actually a wide range of meaning, revealing usually whatever is justified or essential, and frequently that which is harsh or tough; as applied to language or perform it's a weighty word. We possibly may speak of acrimony in debate or of feeling; asperity of way; harshness of conduct, language, needs, terms, treatment; extent of censure, discipline, fashion; tartness of reply; sourness of aspect; bitterness of character, sensation, retort; virulence and rancor of experience and language.