A colleague and I upset a chivalrous type (7)
I believe the answer is:
paladin
'a chivalrous type' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'a colleague and i upset' is the wordplay.
'a colleague' becomes 'pal' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'upset' is an anagram indicator.
'and'+'i'='andi'
'andi' with letters rearranged gives 'adin'.
'pal'+'adin'='PALADIN'
Can you help me to learn more?
(Other definitions for paladin that I've seen before include "One of the twelve peers at Charlemagne's court - heroic champion" , "Knight errant; a peer of Charlemagne" , "Historical knight" , "Medieval champion" , "paragon" .)