IELTS Speaking · Vocabulary
viable
adjective/ˈvaɪəbl/Band 8
Last updated 21 July 2026
In short
“viable” is a Band 8 adjective that means capable of working successfully; feasible. 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
Capable of working successfully; feasible.
Example sentences
Natural, spoken examples at the level an examiner rewards.
- “The business is no longer commercially viable.”
- “Solar power is a viable alternative to coal.”
Synonyms & antonyms
Synonyms
feasibleworkablepracticable
Antonyms
unviableimpractical
Collocations & common phrases
Word partners that make your usage sound natural — the difference between knowing a word and using it well.
Collocations
commercially viableviable optioneconomically viable
Common phrases
a viable alternative
Related words
Explore more vocabulary
Frequently asked questions
What does “viable” mean?
Capable of working successfully; feasible.
How do you use “viable” in a sentence?
For example: “The business is no longer commercially viable.”
What are some synonyms for “viable”?
Synonyms include feasible, workable, practicable.
Is “viable” good vocabulary for IELTS Speaking?
Yes. It is Band 8 vocabulary, and collocations such as commercially viable, viable option, economically viable help you use it naturally. Reaching for precise, less common words like this is exactly what lifts your Lexical Resource score.
Next step
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