offhandedness

noun

1. (uncountable)The property of being offhand.

   “Your offhandedness is completely inappropriate in such an important situation.”

   “In one photograph, a teenaged Leah crouches by a tall cylindrical tank containing what she identified to me as a giant Pacific octopus named Pamela. We were pals, she said, in a voice that I thought seemed to strive for offhandedness, did you know they taste with their skin? Octopuses, I mean.”