Crossword Genius

A vocal on Substitute or Out of Time ? (9)

Ross

I believe the answer is:

atemporal

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

'out of time ?' is the definition.
I can't tell whether this defines the answer.

'a vocal on substitute' is the wordplay.
'vocal' becomes 'oral' (I've seen this in another clue).
'on' means one lot of letters go next to another.
'substitute' becomes 'temp' (I've seen this in another clue).
'oral' put after 'temp' is 'temporal'.
'a'+'temporal'='ATEMPORAL'

'or' is the link.

Can you help me to learn more?

(Another definition for atemporal that I've seen is " without considering the time?".)

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