uninhibitedness

/ˌʌnɪnˈhɪbɪtɪdnəs/
noun
  1. The quality of being free and natural in behavior, without shyness or self-control.
    • The artist's uninhibitedness showed in her bold, colorful paintings.
    • Her uninhibitedness made her the life of every party.
    • Children often have a natural uninhibitedness that adults lose.
Antonyms