People studying language noted insults GI flung around (9)

I believe the answer is:

linguists

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'people' is the definition.
(linguist is a kind of person)

'studying language noted insults gi flung around' is the wordplay.
'insults gi' can be anagrammed to 'LINGUISTS'.
However, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for linguists that I've seen before include "Polyglots" , "People skilled in languages" .)

I've seen this clue in The Irish Times.

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