Similar words: fierceness, licentiousness, epicene, beneficent, aggressiveness, expressiveness, possessiveness, impressiveness. Meaning: ['naɪsnɪs] 
n. 1. a courteous manner that respects accepted social usage 2. the quality of nice 3. the quality of being difficult to detect or analyze.
n. 1. a courteous manner that respects accepted social usage 2. the quality of nice 3. the quality of being difficult to detect or analyze. 
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1 In some professions, niceness does not get you very far.
2 Mr Pearce was rather bowled over by his niceness, his concern and his ordinariness.
3 Niceness always leaves endless aftertaste in people.
4 She smiled with an extraordinary niceness.
5 Niceness generally ranges from -20 to 19, with -20 being the most favorable or highest priority for scheduling and 19 being the least favorable or lowest priority.
6 It is the kindness, niceness and trueness that enlighten my way.
7 That is, niceness and its cousins are worth about 99.5 per cent of US national income.
8 The first thing you noticed about him was his niceness.
9 Not a bad score for a fortnight in the summer of groovy and psychedelic love, peace and general niceness.
10 The most interesting aspect of the Labour campaign was, however, its glossy, middle-class niceness.
11 So,(www.Sentencedict.com) we have identified two characteristics of winning strategies: niceness and forgivingness.
12 Mr Reagan pulled off his political con-trick through a mixture of calculating charm and genuine niceness.
13 The NI column in Listing 1 above, shows the scheduling priority or niceness of each process.
14 Snakeskinankle boots with amber Perspex heels, a David Bowie soundtrack andmessy ponytails subverted the niceness of the collection.
More similar words: fierceness, licentiousness, epicene, beneficent, aggressiveness, expressiveness, possessiveness, impressiveness, beneficence, senescent, kinetic energy, senescence, specific energy, oneness, behind the scenes, genetic engineering, ripeness, safeness, sameness, baseness, rudeness, idleness, likeness, vileness, lateness, lameness, trueness, aloneness, awareness, soreness.