Cool MateCredible vs Viable
When to use each in English, with meaning, register, and examples.
Credible
Top 3,000 (common)C1adjective
Viable
Top 2,000 (common)C1adjective
Most common: Viable
| Credible | Viable | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈkredəbl/"]/🇺🇸 /["/ˈkredəbl/"]/ | 🇬🇧 /["/ˈvaɪəbl/"]/🇺🇸 /["/ˈvaɪəbl/"]/ |
| Meaning | Something that can be trusted or believed. | Able to work or succeed. |
| Example | a **credible explanation/witness** | a **viable option/proposition** |
| Register | Neutral | Neutral |
| How common | Top 3,000 (common) | Top 2,000 (common) |
| CEFR level | C1 | C1 |
| Part of speech | adjective | adjective |
| Collocations | appear, be, seem, highly, very, completely, appear, be, seem, highly, very, completely | be, prove, seem, extremely, truly, perfectly |
| Antonyms | unreliable, incredible, dubious | unviable, impractical, infeasible |
| Common mistakes | Confused with 'credibility', which is a noun., Using 'credible' to describe people instead of their work or sources., Mispronouncing the word, especially the 'ble' ending. | Confused with 'viable' vs 'viability' - remember 'viable' is the adjective., Using 'viable' incorrectly with non-project contexts, like personal opinions., Mixing up 'viable' with 'valid' - 'viable' relates to practicality, 'valid' to correctness. |
| Usage notes | Use 'credible' to describe sources of information, like news articles or experts. It is suitable for both formal and informal contexts, but avoid using it in casual conversations and slang. | Use 'viable' when discussing options or plans that are practical and achievable. Avoid in very casual contexts; it sounds more professional. |
Frequently asked questions: Credible vs Viable
What's the difference between Credible and Viable?
Credible: Something that can be trusted or believed. Viable: Able to work or succeed.
Which is more common: Credible and Viable?
Viable is the most common in everyday English.
Are Credible and Viable the same CEFR level?
Credible: C1, Viable: C1 on the CEFR scale.
Can I use Credible and Viable interchangeably?
Not always. Credible and Viable are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.