What does "unperformable" mean?

Not performable; that cannot be performed.

Unperformable

Common synonyms include: beyond one, impractical, inoperable, insuperable, insurmountable, unattainable.

adj

adj ·Rare ·Advanced level

Adjective

1
Not performable; that cannot be performed.
"The avant-garde play was said to be unperformable."

"The avant-garde play was said to be unperformable."

From un- + performable.