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"stillness" is also used as a crossword clue. If that's what you saw, the answer is often stasis (6 letters).
Definitions
(poetic) tranquil silence
Word 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.
Used in a sentence
“The teru-tero (Vanellus cayanensis), is another bird, which often disturbs the stillness of the night.”
“The grauitie, and ſtillneſſe of your youth / The world hath noted.”
“Like a heartbeat drives you mad / In the stillness of remembering what you had / And what you lost”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Quiet calm”9 letters
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