Fearfully (7)
I believe the answer is:
timidly
'fearfully' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for timidly that I've seen before include "'Bashfully, shyly (7)'" , "In faint-hearted manner" , "In shy, nervous manner" , "Without much confidence" , "without courage" .)