... is evil - like a candle? (6)
I believe the answer is:
wicked
'is evil' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for wicked that I've seen before include "Evil or morally wrong" , "Absorbed in enchanting" , "Evil; musical" , "Very bad, or very good nowadays" , "A candle is" .)