Crossword Genius

One willing to help the company telephonist (2-8)

Ross

I believe the answer is:

co-operator

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'one willing to help' is the definition.
The definition suggests a singular noun which matches the answer.

'company telephonist' is the wordplay.
'company' becomes 'co' (abbreviation).
'telephonist' becomes 'operator' (I've seen this before).
'co'+'operator'='CO-OPERATOR'

'the' is the link.

Can you help me to learn more?

(Another definition for co-operator that I've seen is " One working with another".)

I've seen this clue in The Irish Independent.
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