Sheepish press chief retaining honour after hoax (10)
I believe the answer is:
shamefaced
'sheepish' is the definition.
(I know that sheepish can be written as shamefaced)
'press chief retaining honour after hoax' is the wordplay.
'press chief' becomes 'ed' (editor).
'retaining' means one lot of letters goes inside another (inserted letters are held or retained).
'honour' becomes 'face' (I can't justify this - if you can you should give a lot more credence to this answer).
'after' is a charade indicator (letters next to each other).
'hoax' becomes 'sham' (I've seen this in another clue).
'ed' enclosing 'face' is 'efaced'.
'efaced' put after 'sham' is 'SHAMEFACED'.
Can you help me to learn more?
(Other definitions for shamefaced that I've seen before include "Displaying dishonour" , "Hangdog" , "Sorry-looking" , "Looking guilty" , "became conscience-stricken" .)