Being unlikely to boast, detective found last clue, those feeling the shame consumed it (6,3)
I believe the answer is:
humble pie
'being' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?
'unlikely to boast detective found last clue those feeling the shame consumed it' is the wordplay.
I cannot quite see how this works, but
'detective' could be 'pi' (private eye) and 'pi' is found within the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
The remaining letters 'humble' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for humble pie that I've seen before include "It's eaten in humiliation" , "Eat this dish to be apologetic" , "Food of the repentant?" , "The dish to eat by way of an apology" , "What one eats when accepting humiliation" .)