IELTS Speaking · Vocabulary
credible
adjective/ˈkredəbl/Band 8
Last updated 21 July 2026
In short
“credible” is a Band 8 adjective that means able to be believed; convincing and trustworthy. Below you'll find its pronunciation, natural example sentences, synonyms and antonyms, and the collocations that help you use it accurately in the IELTS Speaking test.
Meaning
Able to be believed; convincing and trustworthy.
Example sentences
Natural, spoken examples at the level an examiner rewards.
- “Always check that a source is credible.”
- “She gave a credible account of events.”
Synonyms & antonyms
Synonyms
believabletrustworthyreliable
Antonyms
implausibleunreliabledubious
Collocations & common phrases
Word partners that make your usage sound natural — the difference between knowing a word and using it well.
Collocations
credible sourcecredible evidencehighly credible
Common phrases
a credible source
Related words
Explore more vocabulary
Frequently asked questions
What does “credible” mean?
Able to be believed; convincing and trustworthy.
How do you use “credible” in a sentence?
For example: “Always check that a source is credible.”
What are some synonyms for “credible”?
Synonyms include believable, trustworthy, reliable.
Is “credible” good vocabulary for IELTS Speaking?
Yes. It is Band 8 vocabulary, and collocations such as credible source, credible evidence, highly credible help you use it naturally. Reaching for precise, less common words like this is exactly what lifts your Lexical Resource score.
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