Remorse of English fool interrupting Trump's no.2 (9)
I believe the answer is:
penitence
'remorse' is the definition.
(I know that penitence is a type of remorse)
'english fool interrupting trump's no 2' is the wordplay.
'english' becomes 'E' (abbreviation).
'fool' becomes 'nit' (both can mean a stupid person).
'interrupting' means one lot of letters goes inside another.
'trump's no e' becomes 'pence' (I can't justify this - if you can you should give a lot more credence to this answer).
'e'+'nit'='enit'
'enit' put within 'pence' is 'PENITENCE'.
'of' is the link.
Can you help me to learn more?
(Other definitions for penitence that I've seen before include "display of remorse" , "Contrition, remorse" , "shame" , "Contriteness" , "A show of regret for wrongdoing" .)