illegitimate

illegitimate is an Adverb

Definition:

[1] Not according to law; not regular or authorized; unlawful; improper.

[2] Unlawfully begotten; born out of wedlock; bastard; as, an illegitimate child.

[3] Not legitimately deduced or inferred; illogical; as, an illegitimate inference.

[4] Not authorized by good usage; not genuine; spurious; as, an illegitimate word. Illegitimate fertilization, or Illegitimate union (Bot.), the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. Darwin.