Wicked soul transported in a number of people (7)
I believe the answer is:
busload
'a number of people' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'wicked soul transported in' is the wordplay.
'wicked' becomes 'bad' (similar in meaning).
'transported' indicates an anagram.
'in' means one lot of letters goes inside another.
'soul' is an anagram of 'uslo'.
'bad' placed around 'uslo' is 'BUSLOAD'.
Can you help me to learn more?
(Another definition for busload that I've seen is " Coachful".)