With anxiety or apprehension (8)
I believe the answer is:
uneasily
'with anxiety or apprehension' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for uneasily that I've seen before include "Hardly so, you might think" , "With anxiety or apprehension" , "In worried way, lacking in confidence" , "In nervous way" , "In apprehensive manner" .)