nicenessEnglishOxford English Thesaurusniceness noun 1 niceness gets you nowhere in the do-or-die modern world: pleasantness, friendliness, agreeableness, charm, amiability, affability, kindness, decency, geniality, cordiality, warmth, sympathy, understanding, compassion. ▷antonyms nastiness. 2 nice chap, right sort of background, but is niceness enough?: politeness, courtesy, civility, gentility, refinement, respectability. ▷antonyms rudeness.niceness Oxford Dictionary of English