" viability "

1: as in possibility, feasibility;

•  Synonyms : 

•  feasibility,

•  feasibleness,

•  possibility,

•  potentiality,

•  reasonability,

•  reasonableness,

•  credibility,

•  plausibility,

•  plausibleness,

•  liability,

•  likelihood,

•  probability

•  Antonyms : 

•  improbability,

•  unlikelihood,

•  unlikeliness,

•  doubtfulness,

•  dubiousness,

•  impracticability,

•  impracticality,

•  implausibility,

•  incredibility,

•  incredibleness

2: as in existence;

•  Synonyms : 

•  existence,

•  survival,

•  survivance,

•  survivorship,

•  enduringness,

•  permanence,

•  abidance,

•  ceaselessness,

•  continuance,

•  continuation,

•  continuity,

•  continuousness,

•  durability,

•  duration,

•  endurance,

•  persistence,

•  subsistence

•  Antonyms : 

•  cessation,

•  close,

•  discontinuance,

•  discontinuity,

•  end,

•  ending,

•  expiration,

•  finish,

•  stoppage,

•  surcease,

•  termination

1: capable of being done or carried out;

  * e.g., " ... more research will be required to see if this is a viable solution "

•  Synonyms : 

•  achievable,

•  attainable,

•  doable,

•  feasible,

•  possible,

•  practicable,

•  realizable,

•  workable

•  Antonyms : 

•  hopeless,

•  impossible,

•  impracticable,

•  infeasible,

•  nonviable,

•  unattainable,

•  undoable,

•  unfeasible,

•  unrealizable,

•  unviable,

•  unworkable