impracticability
impracticability (im-prak-ti-k[schwa]-bil-[schwa]-tee).Contracts. 1. A fact or circumstance that excuses a party from performing an act, esp. a contractual duty, because (though possible) it would cause extreme and unreasonable difficulty. • For performance to be truly impracticable, the duty must become much more difficult or much more expensive to perform, and this difficulty or expense must […]