deferentially

from WordNet (r) 3.0 (2006)

deferentially
    adv 1: in a servile manner; "he always acts so deferentially
           around his supervisor" [syn: {deferentially},
           {submissively}]
    2: in a respectfully deferential manner; "he listened
       deferentially"

from The Collaborative International Dictionary of English v.0.48

Deferentially \Def`er*en"tial*ly\, adv.
   With deference.
   [1913 Webster]