Lacking morals in HQ (4)
I believe the answer is:
base
'hq' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for base that I've seen before include "Ignoble; low part" , "'Foundation, bottom (4)'" , "Ignoble; bottom" , "Mil. operations centre" , "Foot; ignoble" .)