Endorse editor's assistant and writer (9)

I believe the answer is:

'endorse' is the definition.
(thesaurus)

'editor's assistant and writer' is the wordplay.
'editor's assistant' becomes 'sub' (subeditor).
'and' means one lot of letters go next to another.
'writer' becomes 'scribe' (scribe is a kind of writer).
'sub'+'scribe'='SUBSCRIBE'

(Other definitions for subscribe that I've seen before include "contribute regularly" , "Give regular payments" , "Sign up" , "Agree" , "Contribute money" .)

I've seen this clue in The Telegraph.

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