Detest having a horde going around home at start of event (9)
I believe the answer is:
abominate
'detest' is the definition.
(abominating is a kind of detesting)
'a horde going around home at start of event' is the wordplay.
'horde' becomes 'mob' (I've seen this before).
'going around' says the letters should be written in reverse.
'home' becomes 'in' ('he's home' can mean 'he's in').
'at' is a charade indicator (letters next to each other).
'start of event' becomes 'ate' (I am not sure about this - if you are sure you should believe this answer much more).
'mob' in reverse letter order is 'bom'.
'a'+'bom'+'in'+'ate'='ABOMINATE'
'having' is the link.
Can you help me to learn more?
(Other definitions for abominate that I've seen before include "Loathe, find hateful" , "Condemn" , "Regard with disgust" , "Amoeba nit - easy to loathe" , "Dislike deeply" .)