Deceptively fed full of beef? (5)
I believe the answer is:
foxed
'deceptively fed full of beef?' is the definition.
I can't judge whether this definition defines the answer.
'fed full of beef?' is the wordplay.
'full of' means one lot of letters goes inside another.
'beef?' becomes 'ox'.
'fed' going around 'ox' is 'FOXED'.
Can you help me to learn more?
(Other definitions for foxed that I've seen before include "Baffled" , "a bit off-colour" , "Deceived in vulpine manner" .)