Effective narration (7)

I believe the answer is:

telling

I believe this is a double definition.

'effective' is the first definition.
(synonyms)

'narration' is the second definition.
(I know that telling is a type of narration)

(Other definitions for telling that I've seen before include "Powerful; relating" , "Striking, having noticeable effect" , "Effective - narration" , "relation" , "of significance" .)

I've seen this clue in The Times, The Telegraph, The Globe and Mail, The Guardian and The Irish News.

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