illegitimate (n.)
illegitimate (adj.)
- actionable
- affected
- anarchic
- anarchistic
- anomic
- apocryphal
- artificial
- assumed
- baseborn
- bastard
- black-market
- bogus
- bootleg
- brummagem
- by-blow
- chargeable
- colored
- contraband
- counterfeit
- criminal
- distorted
- dummy
- embellished
- ersatz
- factitious
- fake
- false
- fatherless
- feigned
- felonious
- fictitious
- fictive
- flawed
- garbled
- illegal
- illicit
- imitation
- impermissible
- improper
- incorrect
- invalid
- irregular
- lawless
- make-believe
- man-made
- misbegotten
- mock
- natural
- nonlegal
- outlaw
- outlawed
- perverted
- phony
- pinchbeck
- pretended
- pseudo
- punishable
- quasi
- queer
- self-styled
- sham
- shoddy
- simulated
- so-called
- soi-disant
- spurious
- supposititious
- synthetic
- tin
- twisted
- unauthentic
- unauthorized
- unconstitutional
- under-the-counter
- under-the-table
- unlawful
- unnatural
- unofficial
- unreal
- unwarrantable
- unwarranted
- warped
- wrongful