Definition of "illegitimate" in English

adjective

1. Not conforming to known principles, or established or accepted rules or standards.

2. Not in accordance with the law.

3. Not sanctioned by marriage.

4. Not correctly deduced.

   • an illegitimate inference

5. Not authorized by good usage; not genuine.

   • an illegitimate word

6. (botany) Involving the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers.

   • illegitimate union; illegitimate fertilization

noun

1. A person born to unmarried parents.

verb

1. (transitive) To make illegitimate.