adjective
limpid
LIM-pid/ˈlɪmpɪd/
Clear and transparent to perception.
The limpid water reveals every pebble on the streambed.

Etymology
Latin limpidus expresses physical clarity or transparency. Applied to language or ideas, that clarity becomes ease of understanding: nothing obscures the meaning.
In context
it was limpid like a rock crystal its value lay in its transparency
More examples
- Fish glide beneath the lake's limpid surface.
- Her limpid prose makes a complex subject easy to follow.
- He explains the rules in limpid language.
Forms
limpid
limpidity noun — Clarity of appearance or expression.
Similar words
- clear
- Broader and more common for both liquids and explanations.
- transparent
- Emphasizes seeing through a material rather than understanding expression.
- lucid
- Usually describes understandable thought or expression, not physical transparency.