Submissively (6)
I believe the answer is:
meekly
'submissively' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for meekly that I've seen before include "Submissively, gently" , "In a mild and submissive manner" , "In a compliant manner" , "In docile, obedient manner" , "In gentle, acquiescent manner" .)