friskiness

frisky +‎ -ness

friskiness (usually uncountable, plural friskinesses)

1. The characteristic or quality of being frisky.
   • 1944, Sarah Campion, The Pommy Cow, page 159:

     So he let all his chances go by, and the nurses, piqued, let the raw, shy, diffident Australian go by, sensing in him a depth of despair so profound that it made their little games and friskinesses ring as hollow and brittle as the glass balls they hung on the Christmas tree.