Crossword Genius

We all need it, with excellent right (3)

Ross

I believe the answer is:

air

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'we all need it' is the definition.
I can't tell whether this defines the answer.

'with excellent right' is the wordplay.
'with' means one lot of letters go next to another.
'excellent' becomes 'ai' (resembles 'A1', old-fashioned term for excellent).
'right' becomes 'r' (abbreviation).
'ai'+'r' is 'AIR'.

Can you help me to learn more?

(Other definitions for air that I've seen before include "Gas mix surrounding the earth" , "The earth's atmosphere" , "Ventilate with breathing gas" , "Atmosphere surrounding us" , "Ventilate, say grievance" .)

I've seen this clue in the Evening Standard.
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