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not acceptable

not acceptable

44 2.2
Not allowed by rules and not good enough for standards
  • idiom
translation icon : inaceptable
  • It is not acceptable to throw tantrums in public places.
  • not acceptable behavior
  • not acceptable to use
  • not acceptable practice

And for us, that's not acceptable.

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Examples

  • Students need to understand that these clothes are not acceptable at most work sites.

    Academic text (1995)
  • Well, I'm sorry, but that's just not acceptable.

  • This is just not acceptable in this day and age.

  • In daily life, it is not acceptable for individuals to harm others.

    Academic text (1997)
  • Most people know and agree that hostile sexism is not acceptable.

    Academic text (2013)
  • He was destroying our morale, so we let him know this kind of behavior was not acceptable.

  • It is not acceptable to throw tantrums in public places.

  • Students need to understand that these clothes are not acceptable at most work sites.

  • Bullying and intimidation are not acceptable ways to conduct foreign policy in the 21st century.

Synonyms

wrong
vsnot acceptable
1.0

Not suitable for a particular time or purpose

is stronger, also covering formal rules, standards, and permissions
inappropriate
vsnot acceptable
354 3.7

Not right for a situation or event

focuses more broadly on rule breaking or failing required standards beyond propriety
unacceptable
vsnot acceptable
256 3.2

Not good enough or not allowed by rules

is the two word negative phrase form rather than a single adjective
off-limits
vsnot acceptable
102 4.6

Not allowed to enter, use, or talk about

also covers bad quality or unsuitability beyond restricted access or not allowed topics
improper
vsnot acceptable
100 4.1

Not suitable according to normal rules or standards

is more general, also applying to failing technical or quality standards
forbidden
vsnot acceptable
96 3.2

Not allowed by law, rules, or custom

is more general, also covering failing standards or being unsuitable beyond rules
invalid
vsnot acceptable
  • Formal
69 4.7

Not accepted by law or no longer in effect

is broader, covering general unsuitability or failing nonlegal standards as well
out of the question
vsnot acceptable
56 2.7

Not possible or allowed to do

is broader by also referring to failing standards and poor suitability
unfit
vsnot acceptable
51 3.7

Not suitable for a particular job or use

includes avoidable permission violations as well, not only poor quality
objectionable
vsnot acceptable
31 6.7

Causing people to feel offended or want to protest

is broader, also covering rule violations, poor quality, and lack of permission
unsuitable
vsnot acceptable
20 2.6

Not right for a person, place, or purpose

is broader, covering rule violation or failing official standards as well
unusable
vsnot acceptable
16 2.3

Damaged or broken so it does not work

is broader, applying to appearance, rules, or lack of permission as well
unbecoming
vsnot acceptable
  • Formal
15 6.7

Not suitable for a situation or for what people expect

is broader, applying to rules, permissions, or other quality standards too
impermissible
vsnot acceptable
  • Formal
6 7.7

Not allowed by rules, laws, or official standards

also covers unsuitability and failing standards, not only rule bans
unaccepted
vsnot acceptable
1 5.3

Not approved by most people or by an official group

is broader by also covering legal bans and physical unsuitability as well
prohibited
vsnot acceptable
  • Formal
1 3.7

Not allowed by law or by an authority

is broader, including poor quality or social unsuitability beyond official bans
unallowable
vsnot acceptable
  • Formal
1 6.4

Not allowed by rules or laws

is broader, also applying to poor fit or lack of required quality
nonstandard
vsnot acceptable
1 7.0

Not following the usual rules for size, shape, or quality so it may not fit other things

is more general, covering permission, social fit, and expected quality too
exceptionable
vsnot acceptable
  • Formal
1 9.1

Likely to offend or upset people

is broader, also meaning rule breaking or failing quality rather than just offense
unbefitting
vsnot acceptable
  • Formal
7.2

Not suitable for a person or situation

covers general permission or quality failures rather than personal suitability
banned
vsnot acceptable
1.1

Not allowed by law or by people in charge

also applies when something is poor quality or socially inappropriate, not only officially removed
nonstandardized
vsnot acceptable
7.3

Made without following an official or usual rule

is broader, including social acceptability and permission rather than just standardizing

Antonyms

477 2.5

Good enough for a particular use or standard

172 1.8

Right for a certain purpose, person, or situation

How Acceptable

ideal
203 4.2
suitable
172 1.8
acceptable
477 2.5
borderline
62 5.3
not acceptable
44 2.2
intolerable
42 4.9

Surface Forms

not acceptable positive

Morphology

not + acceptable

The meaning 'not allowed / not meeting standards' is directly derivable by combining the negator 'not' with the adjective 'acceptable' — a straightforward negation of the adjective. This is a common compositional pattern across languages and would be immediately understandable to a B1 learner who knows both constituents.

Etymology

Not acceptable is a simple image: something cannot be accepted or is not good enough. Imagine a teacher crossing out bad homework and saying it is not acceptable — that picture shows why it means 'not allowed' or 'not meeting the rules'.