Out there, double? No, triple! (9)

I believe the answer is:

threefold

I'm a little stuck... Click here to teach me more about this clue!

'triple' is the definition.
(I know that triple can be written as threefold)

'out there double? no' is the wordplay.
'out' indicates anagramming the letters.
'double? no' becomes 'fold' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'there' is an anagram of 'three'.
'three'+'fold'='THREEFOLD'

Can you help me to learn more?

(Other definitions for threefold that I've seen before include "Triple" , "in several parts" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.