Cries, 'Oh!' about ostentatious antics (7)

I believe the answer is:

heroics

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

'cries oh about ostentatious antics' is the definition.
I can't tell whether this defines the answer.

'cries oh about' is the wordplay.
'about' indicates an anagram.
'cries'+'oh'='criesoh'
'criesoh' is an anagram of 'HEROICS'.

Can you help me to learn more?

(Other definitions for heroics that I've seen before include "verse" , "Bold and fearless behaviour" , "Bold and dramatic behaviour" , "Unduly bold behaviour" , "Outstanding performance" .)

I've seen this clue in The Guardian.

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