Crossword Genius

An attack on the integrity of a person is disgraceful (9)

Ross

I believe the answer is:

aspersion

I'm a little stuck... Click here to teach me more about this clue!

'an attack' is the definition.
(I know that aspersion is a type of attack)

'the integrity of a person is disgraceful' is the wordplay.
'a person is' can be anagrammed to 'ASPERSION'.
Though, I'm not sure how the anagram is indicated.

'on' acts as a link.

Can you help me to learn more?

(Other definitions for aspersion that I've seen before include "Defamatory suggestion" , "Cast this slur" , "No praises (anag) - disparaging remark" , "Slander" , "Attack on reputation" .)

I've seen this clue in the Sydney Morning Herald.
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