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Definition of viability
viability
/ˌvaɪ.əˈbɪl.ə.ti/
vi · a · bil · i · ty
Adverb:viably
•Plural:viabilities
•Adjective:viable
viability Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Top 10k
Syllables
5
viability Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The ability of a plan, business, or system to work successfully and remain sustainable over time.
Example
"The committee commissioned an independent study to assess the long-term financial viability of the proposed transit line."
2
In biology and medicine, the capacity of an organism, fetus, cell, or seed to live, grow, and develop normally outside a host or under specific environmental conditions.
Example
"Agronomists tested the seeds after five years in cold storage to determine their germination rate and overall viability."
Synonyms
View all synonyms for viability Antonyms
View all antonyms for viability• Rhymes for viability
Word Origin & Etymology
Borrowed in the mid-19th century from French 'viabilité', derived from 'viable' ('capable of life'), from Old French 'vie' ('life') and ultimately from Latin 'vita' ('life').
Cite this Entry
Wordmom. (2026). Definition of Viability. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/viability