quietnessEtymologyFrom Middle English quietnes, quietnesse, quietenesse, qwietnesse, qwietenesse, equivalent to quiet + -ness.quietness means absence of sound; silence or hush. Lexicurio rates it Rare gem — a strength score of 73 out of 100.nounAbsence of sound; silence or hush.Absence of disturbance; calm, stillness or serenity.