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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/ˈkwɛst͡ʃənəbl̩/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:K W EH1 S CH AH0 N AH0 B AH0 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Problematic; open to doubt or challenge.
Definition source: English Wiktionary via Wiktextract
Examples
It is questionable if the universe is open or closed.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Of dubious respectability or morality.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Inviting questions; inviting inquiry.
Definition source: English Wiktionary via Wiktextract
Usage: obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adjective
Meaning 4
subject to question
Definition source: Princeton WordNet 3.0
Examples
questionable motives
a questionable reputation
a fire of questionable origin
Meaning relationships
Synonyms: none provided
Antonyms: unquestionable
5
adjective satellite
Meaning 5
able to be refuted
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: refutable, confutable, confutative
Antonyms: none provided
History
Etymology
Etymology tree English question Proto-Indo-European *-tḗr Proto-Indo-European *-dhlom Proto-Indo-European *-dhlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English questionable From question + -able.
Across languages
Translations
73 source translations are retained for this English entry.
Belarusian:
спрэчны
(sprečny)
— problematic; open to doubt or challenge
Bulgarian:
съмнителен
(sǎmnitelen)
— problematic; open to doubt or challenge
Bulgarian:
спорен
(sporen)
— problematic; open to doubt or challenge
Catalan:
qüestionable
— problematic; open to doubt or challenge
Chinese Mandarin:
可疑的
(kěyí de)
— problematic; open to doubt or challenge
Czech:
diskutabilní
— problematic; open to doubt or challenge
Danish:
tvivlsom
— problematic; open to doubt or challenge
Dutch:
twijfelachtig
— problematic; open to doubt or challenge
Finnish:
kyseenalainen
— problematic; open to doubt or challenge
French:
discutable
— problematic; open to doubt or challenge
Georgian:
სადაო
(sadao)
— problematic; open to doubt or challenge
German:
fragwürdig
— problematic; open to doubt or challenge
Greek:
αμφισβητήσιμος
(amfisvitísimos)
— problematic; open to doubt or challenge
Hungarian:
kétséges
— problematic; open to doubt or challenge
Italian:
problematico
— problematic; open to doubt or challenge
Italian:
questionabile
— problematic; open to doubt or challenge
Italian:
controverso
— problematic; open to doubt or challenge
Italian:
discutibile
— problematic; open to doubt or challenge
Italian:
opinabile
— problematic; open to doubt or challenge
Japanese:
疑わしい
(utagawashii)
— problematic; open to doubt or challenge
Macedonian:
спо́рен
(spóren)
— problematic; open to doubt or challenge
Persian:
سؤالبرانگیز
(so'âl-bar-angiz)
— problematic; open to doubt or challenge
Plautdietsch:
froaglich
— problematic; open to doubt or challenge
Plautdietsch:
bedenkjlich
— problematic; open to doubt or challenge
Polish:
wątpliwy
— problematic; open to doubt or challenge
Polish:
sporny
— problematic; open to doubt or challenge
Polish:
kontrowersyjny
— problematic; open to doubt or challenge
Portuguese:
questionável
— problematic; open to doubt or challenge
Portuguese:
contestável
— problematic; open to doubt or challenge
Portuguese:
duvidoso
— problematic; open to doubt or challenge
Portuguese:
problemático
— problematic; open to doubt or challenge
Romanian:
discutabil
— problematic; open to doubt or challenge
Russian:
спо́рный
(spórnyj)
— problematic; open to doubt or challenge
Serbo-Croatian:
ùpitan
— problematic; open to doubt or challenge
Swedish:
tveksam
— problematic; open to doubt or challenge
Swedish:
tvivelaktig
— problematic; open to doubt or challenge
Ottoman Turkish:
شبههلو
(şübheli)
— problematic; open to doubt or challenge
Azerbaijani:
şübhəli
— of dubious respectability or morality
Bulgarian:
съмнителен
(sǎmnitelen)
— of dubious respectability or morality
Catalan:
criticable
— of dubious respectability or morality
Catalan:
sospitós
— of dubious respectability or morality
Chinese Mandarin:
可疑的
(kěyí de)
— of dubious respectability or morality
Dutch:
twijfelachtig
— of dubious respectability or morality
Dutch:
verdacht
— of dubious respectability or morality
Finnish:
kyseenalainen
— of dubious respectability or morality
French:
douteux
— of dubious respectability or morality
Georgian:
საეჭვო
(saeč̣vo)
— of dubious respectability or morality
German:
fragwürdig
— of dubious respectability or morality
German:
zwiespältig
— of dubious respectability or morality
German:
gewagt
— of dubious respectability or morality
German:
verwegen
— of dubious respectability or morality
Hungarian:
megkérdőjelezhető
— of dubious respectability or morality
Italian:
dubbio
— of dubious respectability or morality
Japanese:
疑わしい
(utagawashii)
— of dubious respectability or morality
Macedonian:
сомни́телен
(somnítelen)
— of dubious respectability or morality
Polish:
kontrowersyjny
— of dubious respectability or morality
Portuguese:
questionável
— of dubious respectability or morality
Portuguese:
dúbio
— of dubious respectability or morality
Portuguese:
suspeito
— of dubious respectability or morality
Russian:
сомни́тельный
(somnítelʹnyj)
— of dubious respectability or morality
Serbo-Croatian:
ùpitan
— of dubious respectability or morality
Spanish:
dudoso
— of dubious respectability or morality
Spanish:
cuestionable
— of dubious respectability or morality
Spanish:
controvertible
— of dubious respectability or morality
Spanish:
sospechoso
— of dubious respectability or morality
Swedish:
tveksam
— of dubious respectability or morality
Swedish:
tvivelaktig
— of dubious respectability or morality
Swedish:
dubiös
— of dubious respectability or morality
Swedish:
suspekt
— of dubious respectability or morality
Swedish:
misstänkt
— of dubious respectability or morality
Swedish:
diskutabel
— of dubious respectability or morality
Swedish:
disputabel
— of dubious respectability or morality
Swedish:
diskuterbar
— of dubious respectability or morality