Fabricator in Somalia regularly (4)
I believe the answer is:
liar
'fabricator' is the definition.
(I've seen this before)
'in somalia regularly' is the wordplay.
'in' indicates a hidden word.
'LIAR' is hidden in the letters of 'somalia regularly'.
(Other definitions for liar that I've seen before include "Rail at a prevaricator" , "not straight [one]" , "Dissembler" , "Fabricator" , "Perjurer" .)