What does viable mean?
Viable describes something that is capable of succeeding, functioning, or continuing to exist. A plan, option, or solution may be viable if it is realistic and able to work under actual conditions; similarly, a population or organism is viable when it can survive and reproduce. The word is often used to evaluate practical prospects: a business idea may be financially viable, while an alternative technology may be technically viable. Its implication is usually stronger than simply being possible, because it suggests that real conditions, resources, and constraints have been taken into account. Viable is common in professional, scientific, and everyday English in both British and American usage. The related noun viability is particularly frequent in discussions of business models, ecosystems, populations, and long-term sustainability. Understanding viable therefore involves thinking beyond theoretical possibility and asking whether something can endure or succeed in practice.
adjectiveCapable of working successfully, being done, or continuing to exist. In biological contexts, it means able to survive or reproduce.
- Capable of being done, put into practice, or working successfully.
- Capable of continuing to live, reproduce, or function successfully.
"The committee is considering a viable alternative that would reduce costs without compromising quality."
"Remote work proved to be a viable option for many organizations."
"The researchers identified conditions under which the newly discovered organism could remain viable in the laboratory."
Viable comes from Latin viabilis, meaning 'alive' or 'able to live'—so its original idea was survival before it became a word for practical success.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does viable come from?
Viable comes from Latin viabilis, meaning 'alive' or 'able to live,' formed from vita, 'life,' with the suffix -bilis. The English word originally referred to being alive or capable of living, and its meaning later broadened to include being able to function or succeed. The same Latin root underlies words such as vital, vitality, and vitamin, which preserve the idea of life or being essential to life.
Related word forms
How viable is actually used
Viable is standard in formal and informal English in both British and American usage. It often suggests that a proposal, plan, organism, or system is not merely possible in theory but capable of working or surviving in practice. The related noun is viability, while the adverb viably is much less common.
Easily confused with viable
Viable means capable of succeeding or surviving, whereas vital means essential to life, existence, or importance.