oscitancy
os·ci·tancy
noun
1.
drowsiness and dullness manifested by yawning
Origin
From Latin oscitans + -cy, present participle of ōscitō (“to yawn, gape, open the mouth”), from Latin os (“the mouth”).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.