|adv.||1.||In a illegitimate manner; unlawfully.|
|Adv.||1.||illegitimately - in a manner disapproved or not allowed by custom; "He acted illegitimately when he increased the rent fourfold"|
|2.||illegitimately - of biological parents not married to each other; "this child was born illegitimately"|
Synonyms: out of wedlock
legitimately - in a lawfully recognized manner; "let's get married so our child can be born legitimately"