adjective not capable of occurring or being accomplished or dealt with
Oppositespossible
adjective (used of persons or their behavior) not acceptable or reasonable
Synonymsunacceptable
Similarintolerable
Source: WordNet 3.1, Princeton University
Synonyms for impossible
Other words for “impossible”, grouped by meaning.
We found 10 synonyms for “impossible”. The most common are hopeless, impracticable, out, unachievable, inconceivable.