1. (of a body of water) free from disturbance by heavy waves
   "a lake of tranquil blue water reflecting a tranquil blue sky"
   - placid, quiet, still, smooth, unruffled 
2. Not agitated; without losing self-possession
   "she became more tranquil"; "tranquil life in the country"
   - calm, unagitated, serene

See also: calm, composed, tranquility, tranquillity, tranquilly

Encyclopedia: Tranquil Tranquil, Mississippi

• interceptor
• intercession
• intercessor
• intercessory
• interchange
• interchangeability
• interchangeable
• interchangeableness
• interchangeably
• interchurch
• intercity
• intercollegiate
• intercolumniation
• intercom
• intercom speaker
• intercommunicate
• intercommunication
• intercommunication system
• intercommunion
• interconnect
• interconnected
• interconnectedness
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• intercontinental
• intercontinental ballistic missile