Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [1511]
vi·cin·i·ty noun, plural -ties [ORIGIN: MF vicinité, fr. L vicinitas, fr. vicinus neighboring, fr. vicus row of houses, village]
1 : NEARNESS, PROXIMITY
2 : a surrounding area : NEIGHBORHOOD
vi·cious adjective 1 : having the quality of vice : WICKED
2 : DEFECTIVE, FAULTY; also : INVALID
3 : IMPURE, FOUL
4 : having a savage disposition; also : marked by violence or ferocity
5 : MALICIOUS, SPITEFUL
6 : worsened by internal causes that augment each other <~ wage-price spiral>
Synonyms
[1] bad, black, evil, immoral, iniquitous, nefarious, rotten, sinful, unethical, unsavory, vile, villainous, wicked, wrong
[4] barbarous, brutal, cruel, heartless, inhumane, sadistic, savage, wanton—more at CRUEL
[4] fell, ferocious, fierce, grim, savage—more at FIERCE
vi·cious·ly adverb : in a vicious manner
Synonyms
hatefully, maliciously, meanly, nastily, spitefully, wickedly—more at NASTILY
vi·cious·ness noun : the quality or state of being vicious
Synonyms
cattiness, despite, hatefulness, malice, malignity, meanness, nastiness, spite, spleen, venom—more at MALICE
vi·cis·si·tude noun : an irregular, unexpected, or surprising change
vic·tim noun 1 : a living being offered as a sacrifice in a religious rite
2 : an individual injured or killed (as by disease or accident)