I lack stately form in Utah (4,4,4)
I believe the answer is:
salt lake city
'in utah' is the definition.
('Salt Lake City' is part of 'utah')
'i lack stately form' is the wordplay.
'form' indicates anagramming the letters (another form of the letters).
'i'+'lack'+'stately'='ilackstately'
'ilackstately' anagrammed gives 'SALT LAKE CITY'.
(Other definitions for salt lake city that I've seen before include "Religious centre" , "Utah state capital" .)