Source : Webster's Revised Unabridged Dictionary (1913)

Confessedly \Con*fess"ed*ly\, adv.
   By confession; without denial. [Written also {confessly}.]

Source : WordNet®

confessedly
     adv : as acknowledged; "true, she is the smartest in her class"
           [syn: {true}, {admittedly}, {avowedly}]