improbable

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improbable

  • /ɪmˈpɹɑbəbl̩/ US
  • /ɪmˈpɹɒbəbl̩/ UK

Where it comes from

Borrowed from Latin improbābilis. By surface analysis, im- + probable.

adjective more improbable · most improbable

  1. Not likely to be true. It's highly improbable that aliens abducted you.
  2. Not likely to happen. Due to the loss of power, it is improbable that we will begin on time.

Opposite: probable

Thesaurus

Closest in meaning: implausible, unbelievable, incredible, unlikely, unconvincing, supposed, marvelous, marvellous, tall, unthinkable, impossible, unreasonable, doubtful, unseemly, dubious, questionable

adjective

Opposite: probable

Translations

Every language

adj not likely to be true

Españolimprobable, inverosímil
日本語疑わしい utagawashii, 低確率の teikakuritsu no
Portuguêsimprovável
Françaisinvraisemblable
Deutschunwahrscheinlich
Ελληνικάαπίθανος apíthanos
Românăimprobabil
Русскийнеправдоподо́бный nepravdopodóbnyj

adj not likely to happen

Españolimprobable
日本語疑わしい utagawashii, 低確率の teikakuritsu no
Portuguêsimprovável
Françaisimprobable
Deutschunwahrscheinlich
Ελληνικάαπίθανος apíthanos
Русскийневероя́тный neverojátnyj

Talk about this word

Cite this
MLA

"improbable." Wiktionary, via Micwyn, micwyn.com/word/improbable. Accessed 6 Nov. 2026.

APA

improbable. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/improbable

Chicago

"improbable." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/improbable.

BibTeX
@misc{improbable_2026,
  title = {improbable},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/improbable},
  urldate = {2026-11-06}
}