impermissible
Against the rules
Impermissible means not allowed or not permitted—the opposite of permissible.
The word appears most often in formal, legal, or institutional contexts: The court ruled the search impermissible under the Fourth Amendment.
Something impermissible violates rules, standards, or boundaries: impermissible conduct, impermissible discrimination.
Officially not permitted
- bannedOfficially disallowed
- illegalForbidden by statute
- unlawfulForbidden by statute
- illicitProhibited by law
outlawed · disallowed · barred · proscribed · verboten · off-limits · contraband · criminalized
Not allowed as evidence
- unconstitutionalViolating fundamental law
- unlawfulForbidden by statute
- actionableAble to be acted upon
- tortiousConstituting a civil wrong
criminal · prosecutable · indictable · litigable · void · invalid · unenforceable · extrajudicial
Not meeting required standards
- unmentionableToo shameful to discuss
- unspeakableBeyond verbal expression
- scandalousMorally offensive or shocking
- indecentOffensive to accepted standards
shameful · stigmatized · disapproved · blasphemous · sacrilegious · heretical · profane · obscene
Without official permit
- unsanctionedNot officially permitted
- unapprovedNot officially permitted
- uncertifiedLacking official approval
- unwarrantedWithout adequate justification
unofficial · illegitimate · irregular · improper · wrongful · infringement · violation · breach
prohibited
Officially not permitted
illicit · outlawed · disallowed · barred · proscribed · verboten · off-limits · contraband · criminalized · interdicted
inadmissible
Not allowed as evidence
- unconstitutionalViolating fundamental law
- unlawfulForbidden by statute
- actionableAble to be acted upon
tortious · criminal · prosecutable · indictable · litigable · void · invalid · unenforceable · extrajudicial · illegitimate
unacceptable
Not meeting required standards
- unmentionableToo shameful to discuss
- unspeakableBeyond verbal expression
- scandalousMorally offensive or shocking
indecent · shameful · stigmatized · disapproved · blasphemous · sacrilegious · heretical · profane · obscene · offensive
unlicensed
Without official permit
- unsanctionedNot officially permitted
- unapprovedNot officially permitted
- uncertifiedLacking official approval
unwarranted · unofficial · illegitimate · irregular · improper · wrongful · infringement · violation · breach · trespass
- Forbiddenforbidden, prohibited, banned, not allowed, off-limits
- unacceptableunacceptable, inappropriate, improper, wrong, forbidden
- modalitycan, modals, could, may, might
- prohibitionsban, forbid, prohibition, forbidden, prohibit
- legitimacylegal, validity, legitimate, lawfulness, lawful
impermissiblepermissible
Sanctioned by authority
allowable · permitted · allowed · acceptable · authorized
impermissiblemandatory
Required by rule
required · obligatory · compulsory · ordered · prescribed
permit, permission, permissible, permissive, permissions, permissiveness, permissibly, permissively