Customarily live here (7)

I believe the answer is:

inhabit

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'customarily live' is the definition.
'inhabit' can be an answer for 'live' (I've seen this before). I'm unsure of the 'customarily' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for inhabit that I've seen before include "Live in (a place)" , "Tenant" , "Dwell in" , "Occupy (dwelling)" , "people" .)

I've seen this clue in The Irish News and The Irish Independent.

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