Inordinately vain man with terrible reputation (4)

I believe the answer is:

ivan

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

'man with terrible reputation' is the definition.
'Ivan' can be an answer for 'man'. I am unsure of the 'with terrible reputation' bit.

'inordinately vain' is the wordplay.
'inordinately' is an anagram indicator.
'vain' is an anagram of 'IVAN'.

Can you help me to learn more?

(Other definitions for ivan that I've seen before include "One Day in the Life of - Denisovich (Solzhenitsyn)" , "Russian boy's name" , "Fellow" , "A Terrible old Russian ruler" , "'Terrible' emperor of Russia" .)

I've seen this clue in The Globe and Mail.

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