|1.||[ adjective ] characterized by absence of emotional agitation|
"calm acceptance of the inevitable" "remained serene in the midst of turbulence" "a serene expression on her face" "she became more tranquil" "tranquil life in the country"
|2.||[ adjective ] free from disturbance|
|Synonyms:||still placid quiet unruffled|
"a ribbon of sand between the angry sea and the placid bay" "the quiet waters of a lagoon" "a lake of tranquil blue water reflecting a tranquil blue sky" "a smooth channel crossing" "scarcely a ripple on the still water"