unsmilingness en · NOUN
Etymology
From unsmiling + -ness.
Meanings
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(uncountable) The absence of a smile.
Now, sobriety does not mean unsmilingness. A man can be just as sober when he smiles as when he does not.
1887, Henry Ward Beecher, A summer in England with Henry Ward Beecher:Unsmilingness is not necessarily blameworthy.
1978, Jane Gardam, God on the Rocks, Abacus, published 2014, page 129: