tranquillity
tran·quil·lity
noun
1.
an untroubled state; free from disturbances
3.
a disposition free from stress or emotion
Origin
From tranquil + -ity, from Middle English tranquillite, from Old French tranquillite, tranquilité, from Latin tranquillitas.
Related words
Word family
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.