All achievability antonyms

noun achievability

• certainty — Certainty is the state of being definite or of having no doubts at all about something.
• safety — the state of being safe; freedom from the occurrence or risk of injury, danger, or loss.
• surety — security against loss or damage or for the fulfillment of an obligation, the payment of a debt, etc.; a pledge, guaranty, or bond.
• plan — a scheme or method of acting, doing, proceeding, making, etc., developed in advance: battle plans.
• impossibility — condition or quality of being impossible.
• impossible — not possible; unable to be, exist, happen, etc.
• feasibility — capable of being done, effected, or accomplished: a feasible plan.
• unlikelihood — the state of being unlikely; improbability.