Support us in shame (7)
I believe the answer is:
sustain
'support' is the definition.
(I know that support can be written as sustain)
'us in shame' is the wordplay.
'in' means one lot of letters goes inside another.
'shame' becomes 'stain' (I've seen this before).
'us' placed inside 'stain' is 'SUSTAIN'.
(Other definitions for sustain that I've seen before include "Endure" , "Strengthen, support" , "Prolong, support" , "Bear (something's weight)" , "Continue, prolong" .)