Feeling of wonder (3)
I believe the answer is:
awe
'feeling of wonder' is the definition.
(awe is a feeling of wonder or fear)
This is the entire clue.
(Other definitions for awe that I've seen before include "Stupefied admiration" , "Fearful respect" , "Feeling of reverence" , "A mix of fear and wonder" , "Overwhelming feeling" .)