Reverential wonder (3)
I believe the answer is:
awe
'reverential wonder' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for awe that I've seen before include "Amazed wonder" , "(Strike with) reverential fear" , "Scots lock [LOCH??]" , "Respectful fear or wonder 93)" , "A mix of fear and wonder" .)