untriable

the task was deemed untriable due to its complexity.

it's an untriable experiment with a high risk of failure.

their approach to the problem proved untriable and ineffective.

the legal challenge was considered untriable in that jurisdiction.

climbing that sheer cliff face seemed utterly untriable.

the project was abandoned as untriable given the limited resources.

reaching the summit in such conditions felt untriable.

the system was designed to handle untriable edge cases.

the question was so difficult it was practically untriable.

the data suggested the scenario was untriable without intervention.

the proposed solution was deemed untriable by the engineering team.