Illegitimate

a.	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 (Bot.) the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. - Darwin.
v. t.	1.	To render illegitimate; to declare or prove to be born out of wedlock; to bastardize; to illegitimatize. [imp. & p. p. Illegitimated ; p. pr. & vb. n. Illegitimating.] The marriage should only be dissolved for the future, without illegitimating the issue. - Bp. Burnet.

Noun	1.	illegitimate - the illegitimate offspring of unmarried parents Synonyms: by-blow, illegitimate child, love child, whoreson, bastard
Adj.	1.	illegitimate - contrary to or forbidden by law; "an illegitimate seizure of power"; "illicit trade"; "an outlaw strike"; "unlawful measures" Synonyms: outlaw, outlawed, illicit, unlawful
	2.	illegitimate - of marriages and offspring; not recognized as lawful Antonyms: legitimate - of marriages and offspring; recognized as lawful

ILLEGITIMATE. That which is contrary to law; it is usually applied to children born out of lawful wedlock. A bastard is sometimes called an illegitimate child.

actionable, affected, against the law, anarchic, anarchistic, anomic, apocryphal, artificial, assumed, bantling, bar sinister, baseborn, bastard, bastard child, bastardy, black-market, bogus, bootleg, brummagem, by-blow, chargeable, colorable, colored, contraband, contrary to law, counterfeit, counterfeited, criminal, distorted, dressed up, dummy, embellished, embroidered, ersatz, factitious, fake, faked, false, falsified, fatherless, feigned, felonious, fictitious, fictive, flawed, garbled, illegal, illegitimacy, illegitimate child, illicit, imitation, impermissible, improper, incorrect, invalid, irregular, junky, justiciable, lawless, love child, make-believe, man-made, misbegotten, miscreated, mock, natural, nonconstitutional, nonlegal, nonlicit, outlaw, outlawed, perverted, phony, pinchbeck, pretended, pseudo, punishable, put-on, quasi, queer, self-styled, sham, shoddy, simulated, so-called, soi-disant, spurious, supposititious, synthetic, tin, tinsel, titivated, triable, twisted, unallowed, unauthentic, unauthorized, unconstitutional, under-the-counter, under-the-table, ungenuine, unlawful, unnatural, unofficial, unreal, unstatutory, unwarrantable, unwarranted, warped, wrongful