crystal clear

adjective6

1. •
   Completely clear (in various senses).
2. •
   Without ambiguity or doubt; completely understood.

   • Reread through the manual until the instructions are crystal clear in your head.
3. •
   Visually clear, a sharp image, of high acuity.

   • The picture on this TV is crystal clear – you can see every grain of sand!
4. •
   Very translucent or transparent.

   • On the lowest level are broad meadow lands, through which wanders a stream of the most crystal clear water imaginable. — 1893
5. •
   Having no clouds.

   • On crystal clear days, such as those during or just following a Santa Ana windstorm, the Salton Sea can be spotted from this area. — 1965
6. •
   Aurally clear.

   • With the slightly nasal, melodic whine of Wooten’s crystal clear vocals this song has a catchy sound to it that guarantees that it has potential to be an ear-bug. — 2004