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unacceptable

5 syllables
adjectivenoun
Quick answer

As an adjective, unacceptable means unsatisfactory. As a noun, it means something that is not acceptable.

Meanings of unacceptable

5 meanings

adjective

  1. Unsatisfactory; not acceptable

  2. linguisticsNot conforming to accepted usage

  3. Not adequate to give satisfaction

    “the coach told his players that defeat was unacceptable”

  4. (used of persons or their behavior) not acceptable or reasonable

    “impossible behavior”

    Similar: impossible

noun

  1. Something that is not acceptable.

Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).

Synonyms by meaning

adjective: (used of persons or their behavior) not acceptable or rea…
impossible
adjective: not conforming to standard usage
unaccepted
Oppositesacceptable

Words that rhyme with unacceptable

acceptablesusceptibleperceptible

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Scrabble & Words With Friends: valid word20 points before bonuses.12 letters.
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Nearby words

UNunabashedunabatedunableunabridgedunaccentedunacceptablyunaccommodatingunaccompaniedunaccountableunaccountablyunaccounted