1. having no tides or lacking the regular rise and fall of water levels
Usage: often used to describe enclosed bodies of water

Examples

• The Great Lakes are essentially tideless bodies of water.
• Swimming in the tideless lake was much easier than in the ocean.
• The tideless sea provided calm conditions for the research vessel.
• Unlike coastal areas, this tideless bay maintains a constant water level.
• The tideless nature of the inland sea made navigation more predictable.
• Fishermen preferred the tideless waters where their nets wouldn’t be disturbed.