irreverently

from WordNet (r) 3.0 (2006)

irreverently
    adv 1: without respect; "the student irreverently mimicked the
           teacher in his presence" [ant: {reverentially},
           {reverently}]
    2: in an irreverent manner; "in the seventeenth century England
       had known fifty years of doctrinal quarrels and civil war;
       clergymen had been turned from their cures, and churches
       irreverently used"

from The Collaborative International Dictionary of English v.0.48

Irreverently \Ir*rev"er*ent*ly\, adv.
   In an irreverent manner.
   [1913 Webster]