stillness
still·ness
noun
2.
calmness without winds
Origin
From Middle English stilnesse, from Old English stilnes (“stillness, quiet; absence of noise or disturbance, release, relaxation; silence, abstention from speech; absence of disturbance or molestation, tranquility, peace, security; that which appeases”), equivalent to still + -ness.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.