viável

Viável is a Portuguese adjective used to describe something that can be carried out, achieved, or sustained, or that can exist or function under given conditions. In everyday language, it is synonymous with feasible, realizable, or practicable, and is often used in business, engineering, policy, and scientific contexts to assess whether a proposed action or system can be implemented within resource, time, and technical constraints. The term can refer to plans, projects, technologies, or strategies, as well as to biological entities when they can live, reproduce, or be sustained in a given environment.

Etymology: Viável comes from the Latin viābilis, meaning "able to be traversed" or "able to be gone through," formed from via (way, road) and the suffix -bilis. The noun viabilidade and the verb viabilizar are derived from the same root; viabilizar means to make something feasible or viable.

Usage notes: In economics and project management, stating that a project is viável implies a positive assessment of feasibility under current constraints. The antonym of viável is inviável, impraticável, or impossível.

Biology and life sciences use viability to denote the capacity of an organism, tissue, seed, or cell to survive, develop, or reproduce. Phrases like "viabilidade de sementes" or "viabilidade de células" are common in laboratory and agricultural contexts.

See also: viabilidade, factibilidade, exequível, realizável, viabilizar.