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Related to illegitimacies: illegitimate child, Illegitimate children


a. Being against established or accepted rules and standards: an illegitimate means of winning a debate.
b. Being against the law; illegal: an illegitimate contract.
c. Not valid or defensible: Their reasons for missing school are illegitimate.
d. Incorrectly deduced; illogical: an illegitimate conclusion.
e. Biology Unacceptable as a scientific name because of not conforming to the international rules of nomenclature.
2. Offensive Born to parents not married to each other.

il′le·git′i·mate·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


An older, and now strongly pejorative, descriptive term for a child born to an unmarried woman.
[L. in-, not + legimatus, lawful]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012