Standard Lemma guide

illegitimate

adj · noun · verb · 13 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ɪlɪˈd͡ʒɪtɪmət/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: [ɪlɨˈd͡ʒɪɾəmɨt]
  • New-Zealand: /ɘlɘˈdʒɘtɘmɘt/
  • /ɪlɪˈd͡ʒɪtɪmeɪt/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: [ɪlɨˈd͡ʒɪɾəmeɪt]
  • New-Zealand: /ɘlɘˈdʒɘtɘmeɪt/
  • CMU ARPABET: IH2 L IH0 JH IH1 T AH0 M IH0 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: invalid, nonstandard

Antonyms: legitimate, valid, acceptable, allowable, legit, leveful, licit, permissible, rightful, rulable, true

2

adj

Meaning 2

Not in accordance with the law.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: illegal, illicit, unlawful, crimeful, criminal, illegitimate, lawbreaking, nonlawful, outlawed, wrongful

Antonyms: legal, legitimate, de jure, lawful, licit, rightful

3

adj

Meaning 3

Not sanctioned by marriage.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: legitimate

4

adj

Meaning 4

Not sanctioned by marriage.

Born to unmarried parents.

Definition source: English Wiktionary via Wiktextract

Examples

  • an illegitimate child

Meaning relationships

Synonyms: natural

Antonyms: legitimate, trueborn

5

adj

Meaning 5

Not sanctioned by marriage.

Having a child or children with a person to whom one is not married.

Definition source: English Wiktionary via Wiktextract

Usage: dated

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: legitimate

6

adj

Meaning 6

Not correctly deduced.

Definition source: English Wiktionary via Wiktextract

Examples

  • an illegitimate inference

Meaning relationships

Synonyms: illogical, invalid

Antonyms: legitimate, logical, valid

7

adj

Meaning 7

Not authorized by good usage; not genuine.

Definition source: English Wiktionary via Wiktextract

Examples

  • an illegitimate word

Meaning relationships

Synonyms: bogus, ingenuine, spurious, artificial, bad, bollocks, concocted, counterfeit, ersatz, fabricated, false, falsified, fake, faux, feigned, forged, fraudulent, illegitimate, mock, phoney, phony-baloney, phony, phony as a three-dollar bill, pseudo, put-up, said to be, sham, synthetic, unauthentic, unreal, trumped-up

Antonyms: bona fide, legitimate, actual, authentic, genuine, legit, lubish, non-fake, pukka, real, sterling, true, unadulterated, uncounterfeited, undissembled, unfaked, unfeigned, veritable

8

adj

Meaning 8

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

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, natural-sciences

Examples

  • illegitimate union; illegitimate fertilization

Meaning relationships

Synonyms: none provided

Antonyms: legitimate

9

noun

Meaning 9

A person born to unmarried parents.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: natural child, lovechild, bastard

Antonyms: none provided

10

verb

Meaning 10

To make illegitimate.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

adjective

Meaning 11

of marriages and offspring; not recognized as lawful

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: legitimate

12

adjective satellite

Meaning 12

contrary to or forbidden by law

Definition source: Princeton WordNet 3.0

Examples

  • an illegitimate seizure of power
  • illicit trade
  • an outlaw strike
  • unlawful measures

Meaning relationships

Synonyms: illicit, outlaw(a), outlawed, unlawful

Antonyms: none provided

13

noun

Meaning 13

the illegitimate offspring of unmarried parents

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: bastard, by-blow, love child, illegitimate child, whoreson

Antonyms: none provided

Broader terms: offspring, progeny, issue

History

Etymology

First attested in 1536, from Latin illēgitimus, most likely an adapted borrowing of Middle French illegitime, equivalent to il- + legitimate, see -ate (etymology 1, 2 and 3).

Across languages

Translations

93 source translations are retained for this English entry.

  • Finnish: epäkelpo — not conforming to known principles, or established or accepted rules or standards
  • Finnish: epäpätevä — not conforming to known principles, or established or accepted rules or standards
  • Finnish: kelvoton — not conforming to known principles, or established or accepted rules or standards
  • Finnish: säännönvastainen — not conforming to known principles, or established or accepted rules or standards
  • Finnish: laiton — not conforming to known principles, or established or accepted rules or standards
  • Russian: нелигитимный (neligitimnyj) — not conforming to known principles, or established or accepted rules or standards
  • Armenian: ապօրինի (apōrini) — against the law
  • Bulgarian: незаконен (nezakonen) — against the law
  • Catalan: il·legítim — against the law
  • Danish: uretmæssig — against the law
  • Danish: uberettiget — against the law
  • Dutch: illegaal — against the law
  • Dutch: onrechtmatig — against the law
  • Esperanto: malrajta — against the law
  • Finnish: laiton — against the law
  • Finnish: lainvastainen — against the law
  • French: illégitime — against the law
  • Georgian: არაკანონიერი (araḳanonieri) — against the law
  • Georgian: უკანონო (uḳanono) — against the law
  • Georgian: არალეგიტიმური (aralegiṭimuri) — against the law
  • German: illegitim — against the law
  • German: unrechtmäßig — against the law
  • Greek: παράνομος (paránomos) — against the law
  • Italian: illegale — against the law
  • Japanese: 違法な (ihō na) — against the law
  • Latin: illegitimus — against the law
  • Polish: nielegalny — against the law
  • Portuguese: ilegal — against the law
  • Romanian: ilegitim — against the law
  • Romanian: nelegal — against the law
  • Russian: незако́нный (nezakónnyj) — against the law
  • Russian: противозако́нный (protivozakónnyj) — against the law
  • Russian: нелега́льный (nelegálʹnyj) — against the law
  • Russian: нелегити́мный (nelegitímnyj) — against the law
  • Swedish: olaglig — against the law
  • Swedish: illegal — against the law
  • Swedish: illegitim — against the law
  • Swedish: lagstridig — against the law
  • Turkish: yolsuz — against the law
  • Turkish: gayrimeşru — against the law
  • Armenian: ապօրինի (apōrini) — born to unmarried parents
  • Bulgarian: незаконно роден (nezakonno roden) — born to unmarried parents
  • Catalan: il·legítim — born to unmarried parents
  • Czech: nemanželský — born to unmarried parents
  • Danish: illegitim — born to unmarried parents
  • Danish: uægte — born to unmarried parents
  • Danish: uægteskabelig — born to unmarried parents
  • Esperanto: nelegitima — born to unmarried parents
  • Finnish: avioton — born to unmarried parents
  • Greek: νόθος (nóthos) — born to unmarried parents
  • Ancient Greek: νόθος (nóthos) — born to unmarried parents
  • Irish: neamhdhlisteanach — born to unmarried parents
  • Irish: tabhartha — born to unmarried parents
  • Italian: illegittimo — born to unmarried parents
  • Japanese: 婚外の (kongai no) — born to unmarried parents
  • Japanese: 庶出の (shoshutsu no) — born to unmarried parents
  • Latin: illegitimus — born to unmarried parents
  • Latin: nothus — born to unmarried parents
  • Latin: spurius — born to unmarried parents
  • Manx: oainjyragh — born to unmarried parents
  • Manx: sooree — born to unmarried parents
  • Polish: nieślubny — born to unmarried parents
  • Portuguese: ilegítimo — born to unmarried parents
  • Russian: незаконный (nezakonnyj) — born to unmarried parents
  • Russian: внебрачный (vnebračnyj) — born to unmarried parents
  • Spanish: ilegítimo — born to unmarried parents
  • Spanish: natural — born to unmarried parents
  • Swedish: oäkta — born to unmarried parents
  • Swedish: utomäktenskaplig — born to unmarried parents
  • Swedish: illegitim — born to unmarried parents
  • Turkish: gayrimeşru — born to unmarried parents
  • Ukrainian: незаконнонаро́джений (nezakonnonaródženyj) — born to unmarried parents
  • Vietnamese: đẻ hoang — born to unmarried parents
  • Bulgarian: неправилен (nepravilen) — illogical
  • Danish: ulogisk — illogical
  • Finnish: väärä — illogical
  • Finnish: epälooginen — illogical
  • Finnish: epäpätevä — illogical
  • Finnish: väärä — not genuine; not authorized by good usage
  • French: illégitime — not genuine; not authorized by good usage
  • Italian: illegittimo — not genuine; not authorized by good usage
  • Japanese: 偽の — not genuine; not authorized by good usage
  • Japanese: 紛いの (magai no) — not genuine; not authorized by good usage
  • Portuguese: ilegítimo — not genuine; not authorized by good usage
  • Swedish: illegitim — not genuine; not authorized by good usage
  • Finnish: lehtolapsi — person born to unmarried parents
  • Hanunoo: anak sa kalyag — person born to unmarried parents
  • Māori: tama meamea — person born to unmarried parents
  • Māori: raparere — person born to unmarried parents
  • Māori: tīraumoko — person born to unmarried parents
  • Māori: pōriro — person born to unmarried parents
  • Spanish: hijo ilegítimo — person born to unmarried parents
  • Ukrainian: незаконнонаро́джений (nezakonnonaródženyj) — person born to unmarried parents
Real reading context

illegitimate in complete knowledge articles