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Webster 1828 Edition

adv.

Unjustly; in a manner contrary to the moral law or to justice; as, to accuse one wrongfully; to suffer wrongfully.

wrongfully ‎(comparative more wrongfully, superlative most wrongfully)

In a wrongful manner; unjustly.
- 2002, Joe Borgenicht, The Action Hero's Handbook, Quirk Books, page 36
  Wrongfully imprisoned action heroes rarely have the time to wait for an appeal.

unjustly