The virtue of this fellow is domesticity (6)
I believe the answer is:
wisdom
'the virtue' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'of this fellow is domesticity' is the wordplay.
'of' indicates the answer is hidden within the clue.
'WISDOM' can be found hidden inside 'this fellow is domesticity'.
Can you help me to learn more?
(Other definitions for wisdom that I've seen before include "Property of sage" , "Some say it's a combination of experience, knowledge and good judgment" , "Combination of experience, knowledge and good judgement" , "Soundness of judgment, as taught by experience" , "English actor, comedian and singer-songwriter (1915-2010)" .)