WordWeb Online

1. The character of the positive electric pole
   - positivity
    
2. A quality or state characterized by certainty or acceptance or affirmation and dogmatic assertiveness
   - positivity, positivism
    
3. The quality of being encouraging or promising of a successful outcome
   - favorableness [US], favourableness [Brit, Cdn], advantageousness, positivity, profitableness
    
4. An amount greater than zero
   - positivity
    
5. The quality of being undeniable and not worth arguing about
   - incontrovertibility, incontrovertibleness, positivity

Type of: advantage, amount, indisputability, indubitability, polarity, quality, sign, unquestionability, unquestionableness, vantage

Antonym: negativeness, negativity, unfavorableness [US]

Encyclopedia: Positiveness