tranquillity

UK: /træŋˈkwɪləti/ US: (trang kwil′i tē)

WordReference Random House Unabridged Dictionary of American English © 2025

tran•quil•li•ty  (trang kwil′i tē), n. 

1. quality or state of being tranquil;
   calmness;
   peacefulness;
   quiet;
   serenity.

Also, tran•quil′i•ty.

• Latin tranquillitās. See tranquil, -ity
• Middle English tranquillite 1325–75

Collins Concise English Dictionary © HarperCollins Publishers::

tranquillity, tranquility / træŋˈkwɪlɪtɪ/ noun

1. a state of calm or quietude

WordReference Random House Learner's Dictionary of American English © 2025

tran•quil /ˈtræŋkwɪl/   adj. 

1. free from commotion; quiet;
   calm:
   a tranquil village.
2. not affected by disturbing emotions;
   serene;
   placid:
   a tranquil life.

tran•quil•li•ty, tran•quil•i•ty /træŋˈkwɪlɪti/  n. [uncountable]
tran•quil•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2025

tran•quil  (trang′kwil), adj. 

1. free from commotion or tumult;
   peaceful;
   quiet;
   calm:
   a tranquil country place.
2. free from or unaffected by disturbing emotions;
   unagitated;
   serene;
   placid:
   a tranquil life.

• Latin tranquillus quiet, calm, still
• earlier tranquill 1595–1605

tran ′quil•ly, adv. 
tran ′quil•ness, n. 
Synonyms

• 1. See peaceful.

Antonyms

• 1. agitated.