All possible antonyms
pos·si·ble
P p adj possible
- improbable — not probable; unlikely to be true or to happen: Rain is improbable tonight.
- unlikely — not likely to be or occur; improbable; marked by doubt.
- unimaginable — capable of being imagined or conceived.
- unthinkable — inconceivable; unimaginable: the unthinkable size of the universe.
- inconceivable — not conceivable; unimaginable; unthinkable.
- unpractical — not practical; impractical; lacking practical usefulness or wisdom.
- unrealizable — incapable of being made actual or real, as an ideal or ambition: His dream of military glory was unrealizable.
- impossible — not possible; unable to be, exist, happen, etc.
- unreasonable — not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
- unattainable — capable of being attained.