Antonyms of adv illicitly

1 of 2 senses of illicitly

Sense 1
illegitimately, illicitly -- (in a manner disapproved or not allowed by custom; "He acted illegitimately when he increased the rent fourfold")
       Antonym of licitly (Sense 1)
      => legitimately, lawfully, licitly -- (in a manner acceptable to common custom; "you cannot do this legitimately!")

Synonyms of adv illicitly

2 senses of illicitly

Sense 1
illegitimately, illicitly -- (in a manner disapproved or not allowed by custom; "He acted illegitimately when he increased the rent fourfold")

Sense 2
illegally, illicitly, lawlessly -- (in an illegal manner; "they dumped the waste illegally")