English Dictionary

Not according to law; not regular or authorized; unlawful; improper.
Source : opted (76190)  - auto

Unlawfully begotten; born out of wedlock; bastard; as, an illegitimate child.
Source : opted (76191)  - auto

Not legitimately deduced or inferred; illogical; as, an illegitimate inference.
Source : opted (76192)  - auto

Not authorized by good usage; not genuine; spurious; as, an illegitimate word.
Source : opted (76193)  - auto

To render illegitimate; to declare or prove to be born out of wedlock; to bastardize; to illegitimatize.
Source : opted (76196)  - auto