Lucidity

Rarer in this ranking, but still part of the 2,608-character published set.

More common than 灰 (Ash), less common than 艦 (Warship).

Water on the left flows past a tombstone on the right — water so clear you can see the tombstone's reflection, pure lucidity.

In words

澄むすむ to clear (e.g. weather),to become transparentN2

澄ますすます to clear;to make clear;to be unruffled;to look unconcerned;to look demure;look prim;put on airsN1

澄 is rank 1537 of 2,608 in published Japanese.