EN

Synonyms for illegitimate

Most common

misbegotten bogus false fake illegal unlawful invalid

Synonyms by meaning

Adjective

1. Spurious — not authorized by good usage; not genuine

misbegotten, bogus, false, fake, falsified, sham, phony informal US, phoney UK, counterfeit, artificial, pseudo, ersatz, synthetic, unreal, feigned, mock, unauthentic, bastardly, ingenuine, fictitious, pretended, forged, spurious dated

2. Illegal — not in accordance with the law

illegal, unlawful, illicit, outlawed, wrongful, extra-marital, improper, unauthorized, unauthorised UK, criminal, disallowed

3. Invalid — not correctly deduced

invalid, illogical

Noun

Definitions

  1. adj. 1

    Not in accordance with the law.

  2. adj. 2

    Not correctly deduced.

    an illegitimate inference

  3. adj. 3

    Not authorized by good usage; not genuine.

  4. n. 1

    A person born to unmarried parents.

Forms

Plural
illegitimates → bastards, by-blows, whoresons…

Example sentences

  • fake Many consumer reviews of books on Amazon are fake.
  • bogus Sami opened a bank account with a bogus Egyptian ID.
  • falsified They falsified the account balances to evade the tax.
  • misbegotten Voters may yet reject the misbegotten 'Dream Act'.
  • illegal Do you think that handguns should be made illegal?
  • unlawful You have a duty not to comply with an unlawful order.

Popularity over time

Word1850 → 2019Trend
illegitimatesteady
fakerising
bogusrising
falsifiedsteady
misbegottenrising
illegalsteady

Use in printed books, per decade from 1850 to 2019.

By length

4 letters
fake1, mock1, sham1
5 letters
false1, bogus2, phony2
6 letters
forged1, pseudo2, unreal2, phoney2, ersatz2
7 letters
natural3, illegal3, bastard2, invalid3, illicit3, feigned1
8 letters
criminal3, unlawful3, improper3, wrongful2, outlawed2, spurious3, whoreson
9 letters
synthetic3, pretended3, illogical4, falsified3, bastardly, ingenuine
10 letters
artificial4, fictitious3, disallowed3, fatherless3, adulterine
11 letters
counterfeit3, misbegotten4, unauthentic4
12 letters
unauthorized4, unauthorised

The small number after each word is its number of syllables (bogus2 = 2 syllables).

In other languages

Français
illégitime
Italiano
illegittimo
Español
ilegítimo
Deutsch
unrechtmäßig
Català
il·legítim