The antonyms for the word "impoundment" are release, liberation, freedom, emancipation, and discharge. These words refer to the act of setting something or someone free or granting them the ability to move without restriction. Unlike impoundment, which involves confining or detaining, release refers to letting something go, whether it be a person, animal, or object. Liberation and emancipation both involve freeing someone from oppression or captivity, while freedom is a state of being without constraints or restrictions. Discharge is another antonym for impoundment, which refers to the act of releasing something or someone from confinement, such as from a hospital or military service.