What is the meaning of the word "illicitly"?

Definitions:

  1. in a manner disapproved or not allowed by custom copy to clipboard adverb
    • I married my first cousin illicitly in my country, though this is acceptable in other places. copy to clipboard
  2. in an illegal manner copy to clipboard adverb
    • They sold prescription painkillers illicitly on the street. copy to clipboard

Synonyms: