What does impossibility mean in crosswords?

impossibility means: an alternative that is not available

Which crossword clues can have impossibility as the answer?

Possible clues for impossibility include "No-go option".

Word entry · 13 letters

Best crossword clue

"No-go option"

13 letters · collected on this word page

13 lettersSorted biiiilmopsstyStarts with IEnds with Y1 clues

1I2M3P4O5S6S7I8B9I10L11I12T13Y

01“No-go option”13 letters

Not quite right?

I____________