What does unexplained mean in crosswords?

unexplained means: Not yet made clear or given a known cause.

Which crossword clues can have unexplained as the answer?

Possible clues for unexplained include "Still a mystery".

Word entry · 11 letters

Best crossword clue

"Still a mystery"

11 letters · collected on this word page

11 lettersPart of speech adjectiveSorted adeeilnnpuxStarts with UEnds with D1 cluesCommon crossword word

1U2N3E4X5P6L7A8I9N10E11D

From un- + explained.

Source: Wiktionary, CC BY-SA 4.0

01“Still a mystery”11 letters

Not quite right?

U__________