Illegitimate
Illegitimate , adjective
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.
Collocations (1)
Illegitimate fertilization or Illegitimate union (Botany) , the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. — Darwin
Illegitimate , transitive verb
To render illegitimate; to declare or prove to be born out of wedlock; to bastardize; to illegitimatize.
The marriage should only be dissolved for the future, without illegitimating the issue.