" sinfully "

1: as in wickedly, immorally;

•  Synonyms : 

•  evilly,

•  immorally,

•  impurely,

•  wickedly,

•  indecently,

•  obscenely,

•  vulgarly,

•  lasciviously,

•  lewdly,

•  lustfully

•  Antonyms : 

•  chastely,

•  innocently,

•  modestly,

•  morally,

•  purely,

•  righteously,

•  virtuously,

•  decently,

•  decorously,

•  properly,

•  priggishly,

•  primly,

•  prudishly

1: not conforming to a high moral standard; morally unacceptable;

  * e.g., " ... chastised by his minister for his sinful behavior "

•  Synonyms : 

•  bad,

•  dark,

•  evil,

•  immoral,

•  iniquitous,

•  nefarious,

•  rotten,

•  unethical,

•  unlawful,

•  unrighteous,

•  unsavory,

•  vicious,

•  vile,

•  villainous,

•  wicked,

•  wrong

•  Antonyms : 

•  decent,

•  ethical,

•  good,

•  honest,

•  honorable,

•  just,

•  moral,

•  right,

•  righteous,

•  sublime,

•  upright,

•  virtuous