Manage nicely, content with traits? (5)

I believe the answer is:

genic

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'manage nicely content with traits?' is the definition.
I can't tell whether this definition defines the answer.

'manage nicely content with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'GENIC' can be found hidden inside 'manage nicely content'.

Can you help me to learn more?

(Other definitions for genic that I've seen before include "of his heredity" , "like something handed down" .)

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

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