Legally resident, Cummings not in? Lied outrageously! (9)
I believe the answer is:
domiciled
'legally resident' is the definition.
'domiciled' can be an answer for 'resident' (I've seen this before). I'm not certain of the 'legally' bit.
'cummings not in? lied outrageously' is the wordplay.
I cannot quite understand how this works, but
'not' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
an anagram of 'lied' is 'iled' which is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for domiciled that I've seen before include "Resident" , "Established in a fixed residence" .)