Question 1

What does the cryptic crossword clue "Go out of this world, say, in zero visibility (3-6)" mean?

Accepted Answer

The definition is "zero visibility". The wordplay uses a homophone (sounds like). PEA (sounds like – say – ‘pee’ {go} + ‘super’  {out of this world}) – a neat link with ‘smog’ in 2dn – see an interesting article here The answer is PEASOUPER.

Question 2

What is the answer to "Go out of this world, say, in zero visibility (3-6)"?

Accepted Answer

The answer is PEASOUPER.