Feral earthling, terribly flamboyant (6-4-4)

I believe the answer is:

larger-than-life

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'flamboyant' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?

'feral earthling terribly' is the wordplay.
'terribly' indicates anagramming the letters.
'feral'+'earthling'='feralearthling'
'feralearthling' with letters rearranged gives 'LARGER-THAN-LIFE'.

Can you help me to learn more?

(Another definition for larger-than-life that I've seen is " Exaggerated".)

I've seen this clue in The Daily Express.

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