The only long word I brought away from childhood was Approbativeness.
"Confessions of Boyhood"
John Albee
I was greatly impressed when he remarked that I had a large bump of Approbativeness and would sometime be an editor.
"Confessions of Boyhood"
John Albee
Hundreds of years ago, when a person I know was inconceivably young, and found great delight in hanging about the kitchen during the seed-time and harvest of pies and preserves, to glean up the remnants of mince-meat and various mixtures left in the pans, a tiny relative much more acute than he used to practise upon his Approbativeness by soliloquizing to himself while both their spoons were clattering around the sides of the tin pan with frantic rapidity, Now Peggoty isn't going away, and let me have the rest.
"A New Atmosphere"
Gail Hamilton