Psychic youngster speaking without fear (4,6)
I believe the answer is:
mind reader
'psychic' is the definition.
(I've seen this before)
'youngster speaking without fear' is the wordplay.
'youngster speaking' becomes 'miner' (I can't justify this - if you can you should believe this answer much more).
'without' is an insertion indicator ('without' can be similar in meaning to 'outside').
'fear' becomes 'dread' (dread is a kind of fear).
'miner' going around 'dread' is 'MIND-READER'.
(Other definitions for mind reader that I've seen before include "I know what you're thinking!" , "Psychic" , "Man with intuition" , "one knows what he is thinking" , "Thought interpreter" .)