The story
Blend of clear as day + mud. Compare muddy (“unclear, blurry”).
Etymology from Wiktionary, CC BY-SA 4.0.
clear as mud
Today it means: Unclear; difficult or impossible to understand or interpret. Full definition →
Today it means: Unclear; difficult or impossible to understand or interpret. Full definition →
Blend of clear as day + mud. Compare muddy (“unclear, blurry”).
Etymology from Wiktionary, CC BY-SA 4.0.