Indignation of a fisherman who loses line (5)

I believe the answer is:

anger

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'indignation' is the definition.
(indignant anger)

'a fisherman who loses line' is the wordplay.
'a fisherman' becomes 'ange' (I am not sure about this - if you are sure you should believe this answer much more).
'who' becomes 'doc'.
'loses' is a deletion indicator.
'line' becomes 'cord' (cord is a kind of line).
'cord' with 'doc' removed is 'r'.
'ange'+'r'='ANGER'

'of' is the link.

Can you help me to learn more?

(Other definitions for anger that I've seen before include "blaze of this?" , "Hack off" , "Feeling of vexation" , "Incense" , "Strong displeasure" .)

I've seen this clue in The Irish News.

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