designedly

from WordNet (r) 3.0 (2006)

designedly
    adv 1: with intention; in an intentional manner; "he used that
           word intentionally"; "I did this by choice" [syn:
           {intentionally}, {deliberately}, {designedly}, {on
           purpose}, {purposely}, {advisedly}, {by choice}, {by
           design}] [ant: {accidentally}, {by chance},
           {circumstantially}, {unexpectedly}, {unintentionally}]

from The Collaborative International Dictionary of English v.0.48

Designedly \De*sign"ed*ly\, adv.
   By design; purposely; intentionally; -- opposed to
   accidentally, ignorantly, or inadvertently.
   [1913 Webster]