illicit

1. Contrary to accepted morality (especially sexual morality) or convention (synset 301554929)
   "an illicit association with his secretary"
   similar to:

   • adulterous, extracurricular, extramarital - characterized by adultery
   • unlawful - not morally right or permissible
2. Contrary to or forbidden by law (synset 301406764)
   "an illegitimate seizure of power"; "illicit trade"; "an outlaw strike"; "unlawful measures"
   similar to: illegal - prohibited by law or by official or accepted rules
   same as: illegitimate, outlaw, outlawed, unlawful

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