What is the opposite of acceptable?

Need antonyms for acceptable? Here's a list of opposite words from our thesaurus that you can use instead.

Adjective
Opposite of suitable or moderately good
“These personal attacks are unfitting for a person of his stature and unacceptable for a world leader.”
Adjective
Opposite of able to be tolerated or allowed
“Defeat would be hard to endure, but another rotten display would be intolerable.”
Adjective
Opposite of pleasing or producing gladness
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“The critics who long for Johnson's departure may be in for an unpleasant surprise.”
Adjective
Opposite of of a level that just barely meets one's needs or standards
“Safety precautions were inadequate on a building site where a joiner fell eight feet and broke his back.”
Adjective
Opposite of adequate or acceptable
Adjective
Opposite of tolerably acceptable in standard
“Our customers know they can depend on us to maximize their resources and deliver a superior level of support.”
Adjective
Opposite of capable or deserving to be admitted, accepted or allowed
Adjective
Opposite of that can be justified
Adjective
Opposite of capable of being believed
Adjective
Opposite of generally approved, believed, or recognized
“It was unusual for them to deny the children some candy during Halloween.”
Adjective
Opposite of in accordance with the procedural rules
Adjective
Opposite of having sound or fair judgment based on good sense
“Arguments framed in terms of fear may easily be represented as irrational and therefore illegitimate in terms of political debate.”
Adjective
Opposite of to be expected; natural, reasonable, or forgivable
Adjective
Opposite of not excessive
“Frankly, the proposals to introduce taxes on road usage are outrageous.”
Adjective
Opposite of based on, or displaying, common sense
“Of course, the moment I got there it was clear that all my concerns were completely groundless.”
Adjective
Opposite of traditionally, or generally, recognized and accepted
“One must be wary of the quack doctor who treats his patients using unfamiliar techniques.”
Adjective
Opposite of of a suitable quality, standard, or type to meet the required purpose
“Nitrate moving downward may pollute groundwater and well water, thus making it unsuitable for human use.”
Adjective
Opposite of meeting the requirements or qualifications needed
“Clearly, since they're under the gun, they're not going to pick a totally unqualified flunky.”
Adjective
Opposite of average or fairly good
“It was known to be an unsound ship at the dockyard, but the king refused to recall the voyage.”
Adjective
Opposite of accurate in conformity to acceptable standards
“I know you think you can do backflips, but the technique is wrong, and you can end up breaking your neck.”
Adjective
Opposite of of a suitable quality, standard, or type to meet the required purpose
Adjective
Opposite of characterized by widespread appeal or likeability
“She turned up to the event in a rather unappealing brown dress.”
Adjective
Opposite of offering or producing the greatest advantage
“The worst thing you can do right now is to do nothing.”
Adjective
Opposite of small to moderate in size, quantity or degree
“Jabba the Hutt became so irritated with Han Solo that he placed a generous bounty on his head.”
Adjective
Opposite of in accordance with regulations
Adjective
Opposite of having a generous heart or disposition
Adjective
Opposite of well formed; in accordance with the rules of the grammar of a language
Adjective
Opposite of moderate in degree
“It may yet take a national inquiry to establish the full extent of this disturbing phenomenon.”
Determiner
Opposite of a sufficient amount of
“Your experience in this field is insufficient for this role.”
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