adj · 5 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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General-American:/ɪmˈpɹɑbəbl̩/
Received-Pronunciation:/ɪmˈpɹɒbəbl̩/
UK:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:IH2 M P R AA1 B AH0 B AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Not likely to be true.
Definition source: English Wiktionary via Wiktextract
Examples
It's highly improbable that aliens abducted you.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Not likely to happen.
Definition source: English Wiktionary via Wiktextract
Examples
Due to the loss of power, it is improbable that we will begin on time.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adjective
Meaning 3
not likely to be true or to occur or to have occurred
Definition source: Princeton WordNet 3.0
Examples
legislation on the question is highly unlikely
an improbable event
Meaning relationships
Synonyms: unlikely
Antonyms: probable
4
adjective satellite
Meaning 4
too improbable to admit of belief
Definition source: Princeton WordNet 3.0
Examples
a tall story
Meaning relationships
Synonyms: marvelous, marvellous, tall(a)
Antonyms: none provided
5
adjective satellite
Meaning 5
having a probability too low to inspire belief
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: unbelievable, unconvincing, unlikely
Antonyms: none provided
History
Etymology
Borrowed from Latin improbābilis. By surface analysis, im- + probable.
Across languages
Translations
48 source translations are retained for this English entry.
Armenian:
անհավանական
(anhavanakan)
— not likely to be true
Belarusian:
непраўдападо́бны
(njeprawdapadóbny)
— not likely to be true
Bulgarian:
неправдоподо́бен
(nepravdopodóben)
— not likely to be true
Catalan:
improbable
— not likely to be true
Czech:
nepravděpodobný
— not likely to be true
Dutch:
onwaarschijnlijk
— not likely to be true
Finnish:
epätodennäköinen
— not likely to be true
French:
invraisemblable
— not likely to be true
Georgian:
არასარწმუნო
(arasarc̣muno)
— not likely to be true
Georgian:
წარმოუდგენელი
(c̣armoudgeneli)
— not likely to be true
Georgian:
არადამაჯერებელი
(aradamaǯerebeli)
— not likely to be true
Georgian:
დაუჯერებელი
(dauǯerebeli)
— not likely to be true
Georgian:
დამაჯერებლობას მოკლებული
(damaǯereblobas moḳlebuli)
— not likely to be true
Georgian:
ნაკლებად შესაძლებელი
(naḳlebad šesaʒlebeli)
— not likely to be true
Georgian:
ნაკლებად სავარაუდო
(naḳlebad savaraudo)
— not likely to be true
German:
unwahrscheinlich
— not likely to be true
Greek:
απίθανος
(apíthanos)
— not likely to be true
Hungarian:
valószínűtlen
— not likely to be true
Japanese:
疑わしい
(utagawashii)
— not likely to be true
Japanese:
低確率の
(teikakuritsu no)
— not likely to be true
Polish:
nieprawdopododny
— not likely to be true
Portuguese:
improvável
— not likely to be true
Romanian:
improbabil
— not likely to be true
Russian:
неправдоподо́бный
(nepravdopodóbnyj)
— not likely to be true
Slovak:
nepravdepodobný
— not likely to be true
Spanish:
improbable
— not likely to be true
Spanish:
inverosímil
— not likely to be true
Swedish:
osannolik
— not likely to be true
Ukrainian:
неправдоподі́бний
(nepravdopodíbnyj)
— not likely to be true
Armenian:
անհավանական
(anhavanakan)
— not likely to happen
Belarusian:
невераго́дны
(njevjerahódny)
— not likely to happen
Bulgarian:
невероя́тен
(neverojáten)
— not likely to happen
Danish:
usandsynlig
— not likely to happen
Dutch:
onwaarschijnlijk
— not likely to happen
Finnish:
epätodennäköinen
— not likely to happen
French:
improbable
— not likely to happen
Galician:
improbable
— not likely to happen
German:
unwahrscheinlich
— not likely to happen
Greek:
απίθανος
(apíthanos)
— not likely to happen
Hungarian:
valószínűtlen
— not likely to happen
Japanese:
疑わしい
(utagawashii)
— not likely to happen
Japanese:
低確率の
(teikakuritsu no)
— not likely to happen
Portuguese:
improvável
— not likely to happen
Russian:
невероя́тный
(neverojátnyj)
— not likely to happen
Spanish:
improbable
— not likely to happen
Swedish:
osannolik
— not likely to happen
Swedish:
föga troligt
— not likely to happen
Ukrainian:
неймові́рний
(nejmovírnyj)
— not likely to happen