questionable
gb/kwˈɛst͡ʃənəbəl/ us/kwˈɛst͡ʃənəbəl/
B2
英語
~ 6900
語義
0件の語義
adjective
B2
property
1
morally or ethically doubtful
Not clearly right or good in a moral way, and making people feel worried or suspicious.
用法パターン：
questionable [behavior/decision/practice]
よくある間違い：
Learners sometimes use 'questionable' to mean that something simply has questions about it, instead of that it is likely wrong or suspicious. In moral contexts, 'questionable' usually implies negative judgment, not neutral curiosity.
類義語
dubious (Often suggests something that seems dishonest or not completely moral, slightly more formal than 'questionable'.)
対義語
ethical (Describes actions that are clearly right and acceptable according to moral rules, the opposite of morally questionable.)
コロケーション
questionable behavior
|questionable decisions
|questionable practices
|morally questionable
|ethically questionable
|of questionable morality
テーマ
ethics
|judgment
|society
|core_vocabulary
|relationships
例文
- The company was criticized for its questionable marketing practices aimed at children.
- He has a history of questionable business deals that never seem fully transparent.
- Many voters see the politician’s close ties to the industry as highly questionable.
- The charity’s use of donations was called morally questionable by watchdog groups.
- Her decision to lie to the client was at best questionable and at worst clearly wrong.
学習者向け例文
- The boss was fired because of his questionable behavior at work.
- They made a questionable decision that hurt many people.
- Some people think animal testing is morally questionable.
- The company has a questionable way of treating its workers.
- His friendship with the criminal seems very questionable.
adjective
B2
property
2
doubtful in truth or validity
Not clearly true, correct, or right; people can easily doubt it.
用法パターン：
questionable [claim/result/legality]
よくある間違い：
Learners sometimes use 'questionable' where 'questioned' or 'in question' is better. For example, say 'the data is questionable' (meaning its quality is doubtful), not '*the data is questioned' when you want to stress that it may not be true.
類義語
doubtful (Very close in meaning; 'doubtful' can sound slightly more neutral, while 'questionable' often suggests that reasons to doubt are stronger.)
対義語
certain (Indicates that something is definitely true or correct, the opposite of being open to doubt.)
コロケーション
questionable claim
|questionable evidence
|questionable statistics
|questionable result
|questionable conclusion
|questionable legality
テーマ
knowledge
|judgment
|law
|core_vocabulary
|communication
例文
- The study’s findings are based on questionable data from an online survey.
- His explanation for being late is at best questionable and lacks details.
- The contract’s legality is questionable and may not hold up in court.
- They won the game under questionable circumstances after a referee error.
- The website makes questionable claims about miracle health cures.
学習者向け例文
- The numbers in this report are questionable.
- Her story about the accident sounds questionable.
- Some experts say the results of the test are questionable.
- The company used questionable methods to get this information.
- The legality of the new rule is still questionable.
adjective
B2
property
3
of poor or suspect quality
Not very good in quality, style, or safety; people are not sure it is okay.
用法パターン：
questionable [quality/taste/reliability]
よくある間違い：
Learners may confuse 'questionable' with 'unusual'. Something unusual is just different, but something 'questionable' usually suggests it may be bad, low quality, or not appropriate.
類義語
iffy (Informal; often used in speech to describe something that seems not very good or reliable, similar in meaning but more casual than 'questionable'.)
対義語
excellent (Describes very high quality, the opposite of low or suspect quality.)
コロケーション
questionable quality
|questionable taste
|questionable design
|questionable reliability
|of questionable taste
|of questionable value
テーマ
evaluation
|daily life
|art
|core_vocabulary
|daily_life
例文
- The restaurant’s food is tasty, but the hygiene standards are questionable.
- He has a talent for buying cars of questionable reliability.
- The movie is entertaining, though some would say it is in questionable taste.
- They paid a high price for artwork of questionable quality.
- Her outfit, while bold, is of questionable taste for a job interview.
学習者向け例文
- The hotel looked clean, but the beds were of questionable quality.
- That joke is funny but in questionable taste.
- We bought a cheap phone with questionable battery life.
- The safety of this old bridge is questionable.
- He has a questionable sense of style.
文法
辞書形
questionable
IPA
GB/kwˈɛst͡ʃənəbəl/
US/kwˈɛst͡ʃənəbəl/
音節・強勢
ques - tion - able （3音節）
Stress on 1st syllable (ques)
活用形
Adjective
- Base: questionable
関連語
Core family
question
noun A1
questionably
adverb
Related words
questionnaire
noun B2
questioner
noun
Negative and opposite forms
unquestionable
adjective
unquestionably
adverb
Advanced or less common
questionability
noun
表現
ethically questionable
1/ˈɛθɪkəli kwˈɛst͡ʃənəbəl/
fixed phrase
possibly against ethical standards
Used to say that something may go against accepted rules of good behavior in a job or field.
例文
- Sharing patient information without consent is ethically questionable.
- The journalist refused to use sources in an ethically questionable way.
ethically questionable
1/ˈɛθɪkəli kwˈɛst͡ʃənəbəl/
fixed phrase
formal
possibly morally wrong
maybe wrong in a moral way
例文
- It’s ethically questionable to advertise weight-loss products to teenagers.
- Using customer data without clear consent is ethically questionable.
- They avoided tactics that were legal but ethically questionable.
of questionable legality
2/əv kwˈɛst͡ʃənəbəl liɡˈæləti/
fixed phrase
possibly not legal
Used to say that something may not be allowed by law, or that its legal status is not clear.
例文
- The agreement is of questionable legality and could be challenged in court.
- Some experts say the government’s actions are of questionable legality under the constitution.
of questionable taste
3/əv kwˈɛst͡ʃənəbəl tˈeɪst/
fixed phrase
possibly inappropriate in style or taste
Used to say that something (like a joke, clothes, or art) may not be polite, stylish, or acceptable to many people.
例文
- The comedian is known for jokes that are clever but often of questionable taste.
- Some people thought the advertisement was of questionable taste and should be removed.
of questionable value
4/əv kwˈɛst͡ʃənəbəl vˈælju/
fixed phrase
possibly not worth much
Used to say that something may not be very useful, helpful, or worth the cost or effort.
例文
- The training course was expensive and of questionable value to most employees.
- Many experts see these new taxes as of questionable value to the economy.
morally questionable
1/mˈɔɹəli kwˈɛst͡ʃənəbəl/
fixed phrase
ethically doubtful or suspect
Not clearly right or wrong, but making people think it may be wrong in a moral way.
例文
- Even if it is legal, their use of customer data is morally questionable.
- Their use of personal data was seen as morally questionable.
- The experiment was stopped because it was seen as morally questionable.
- He made a lot of money in a morally questionable way.
- The project raises some morally questionable issues.