City in Oklahoma? Hardly! (5)
I believe the answer is:
omaha
'city' is the definition.
(Omaha is an example)
'in oklahoma? hardly' is the wordplay.
'in' says the answer is hidden in the clue.
'OMAHA' is hidden within 'oklahoma hardly'.
(Other definitions for omaha that I've seen before include "O, a ham found in US city on Missouri river" , "- - Beach (WWII)" , "US city; D-Day 16" , "Nebraska city and code-named beach of D-Day landings" , "US 1944 D-Day landing beach" .)