definition of
tranquillity

[1] #1 tranquillity n. [tranquility, quiet] an untroubled state; free from disturbances. wn

[2] #2 tranquillity n. [tranquility, quietness, quietude] a state of peace and quiet. wn

[3] #3 tranquillity n. [repose, quiet, placidity, serenity, tranquility] a disposition free from stress or emotion. wn