(of a body of water) free from disturbance by heavy waves
e.g. a ribbon of sand between the angry sea and the placid bay
e.g. the quiet waters of a lagoon
e.g. a lake of tranquil blue water reflecting a tranquil blue sky
e.g. a smooth channel crossing
e.g. scarcely a ripple on the still water
e.g. unruffled water
Synonym: placid quiet still smooth unruffled
not agitated
without losing self-possession
e.g. spoke in a calm voice
e.g. remained calm throughout the uproar
e.g. he remained serene in the midst of turbulence
e.g. a serene expression on her face
e.g. she became more tranquil
e.g. tranquil life in the country
Synonym: calm unagitated serene