Antonyms of adv legitimately

2 senses of legitimately

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

Sense 2
legitimately -- (in a lawfully recognized manner; "let's get married so our child can be born legitimately")
       Antonym of illegitimately (Sense 2)
      => illegitimately, out of wedlock -- (of biological parents not married to each other; "this child was born illegitimately")

Synonyms of adv legitimately

2 senses of legitimately

Sense 1
legitimately, lawfully, licitly -- (in a manner acceptable to common custom; "you cannot do this legitimately!")

Sense 2
legitimately -- (in a lawfully recognized manner; "let's get married so our child can be born legitimately")