Kicked a chap with a cry of derision (6)
I believe the answer is:
booted
'kicked' is the definition.
(booting is a kind of kicking)
'a chap with a cry of derision' is the wordplay.
'a chap' becomes 'Ed' (short for Edward).
'with' is a charade indicator (letters next to each other).
'a cry' becomes 'boo' (I have seen 'Cry of contempt ' mean 'boo' so perhaps 'cry' could also mean 'boo').
'of derision' becomes 't' (I can't justify this - if you can you should give a lot more credence to this answer).
'boo'+'t'='boot'
'ed' after 'boot' is 'BOOTED'.
Can you help me to learn more?
(Other definitions for booted that I've seen before include "wearing beetle-crushers" , "Kicked" .)