Read the dictionary definition of tranquil. All definitions for this word.
1. (of a body of water) free from disturbance by heavy waves
1. a ribbon of sand between the angry sea and the placid bay
2. the quiet waters of a lagoon
3. a lake of tranquil blue water reflecting a tranquil blue sky
4. a smooth channel crossing
5. scarcely a ripple on the still water
6. unruffled water
2. not agitated; without losing self-possession
1. spoke in a calm voice
2. remained calm throughout the uproar
3. he remained serene in the midst of turbulence
4. a serene expression on her face
5. she became more tranquil
6. tranquil life in the country