Definition of Dubious
Quick Meaning of Dubious
Something uncertain about or do not trust to be true.
Detailed Definition of Dubious
Questionable or of doubtful validity; inspiring doubt or skepticism.
How to Pronounce Dubious
Stress pattern: Ooo (3-syllable word).
Tip: Stress first syllable: DOO-bee-us. Final like 'us'.
Origin and Etymology of Dubious
From Latin dubiosus, from dubium 'doubt'.
How to Use Dubious in a Sentence
Each example shows “dubious” with a CEFR level so learners can pick examples that match their fluency.
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“The study's methodology is dubious, raising concerns about validity of conclusions.”
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“His dubious claim that the experiment was successful lacked supporting evidence.”
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“The company's ethical track record is dubious at best, given recent scandals.”
Synonyms and Antonyms of Dubious
Common Synonyms for Dubious
Smart Synonyms for Dubious — When to Use Each
- questionable
- Raising questions about validity
- uncertain
- Expressing lack of clarity present
- suspect
- May be dishonest or untrustworthy
- ambiguous
- Having many possible interpretations
Common Collocations with Dubious
These phrases pair with “dubious” in everyday English:
- dubious claim
- dubious quality
- dubious honour
- dubious decision
Common Mistakes When Using Dubious
Even fluent speakers slip up with “dubious”. Here’s how to avoid the most common errors:
- ✗ Wrong: I am dubious about his skill
- ✓ Correct: I am skeptical or His skill is dubious
- Why: Dubious describes object, not person
- ✗ Wrong: dubious that he knew
- ✓ Correct: dubious knowledge or questionable whether
- Why: Adjective; modify nouns or complements
- ✗ Wrong: more dubious
- ✓ Correct: increasingly dubious or even more dubious
- Why: Dubious is somewhat absolute; use modifiers
Frequently Asked Questions About Dubious
What is the meaning of "Dubious"?
Something uncertain about or do not trust to be true.
How do you pronounce "Dubious"?
The IPA is /ˈdjuːbiəs/. Stress first syllable: DOO-bee-us. Final like 'us'.
What part of speech is "Dubious"?
"Dubious" is an adjective at C1 level (Common European Framework).
What are synonyms for "Dubious"?
Common synonyms include questionable, uncertain, doubtful.
How do you use "Dubious" in a sentence?
For example: "The study's methodology is dubious, raising concerns about validity of conclusions."