Illegitimate

·adj Not according to law; not regular or authorized; unlawful; improper.

II. Illegitimate ·adj Unlawfully begotten; born out of wedlock; bastard; as, an illegitimate child.

III. Illegitimate ·adj Not authorized by good usage; not genuine; spurious; as, an illegitimate word.

IV. Illegitimate ·adj Not legitimately deduced or inferred; illogical; as, an illegitimate inference.

V. Illegitimate ·vt To render illegitimate; to declare or prove to be born out of wedlock; to Bastardize; to Illegitimatize.