Unmanageable (adjective)

Impossible to control or deal with; not able to be managed effectively.

Origin:

Late 16th century: from un- (expressing negation) + manageable.

Examples:

1. The unmanageable situation quickly spiraled out of control, requiring intervention from higher-ups.
2. The unmanageable workload proved too much for the understaffed team, leading to burnout and high turnover.
3. The unmanageable animal had to be put down, as its aggression posed a threat to its handlers.
4. The unmanageable student was expelled, after repeated misbehavior and defiance of authority.
5. The unmanageable budget was revised, after it was discovered that expenses were outpacing revenue.