Verb
Expressionlessness-lacking expression
Beloved by Toni Morrison page 139
Deep down in her dark rown eyes, back behind the expressionlessness, was a palm held out for a penny which Denver would gladly give her, if only she knew how or knew enough abouther, a knowledge not to be had by the answers to the questions Sethe occasionally put to her:’
I figure it was less or lack of expression or emotion I just never knew this was actually a word.
www.merriam-webster.com/dictionary/expressionless