Overreach implies ambition leading to one's detriment due to tackling unmanageable tasks. She overreached by enrolling in advanced classes across all subjects.
Pro Tip 2/3
Negative Outcome
Using 'overreach' often suggests an unsuccessful result or failure. The team overreached and missed all their deadlines.
Pro Tip 3/3
Extreme Caution
Be careful when accusing someone of overreach as it can sound critical. His comment on overreach didn't sit well with the ambitious entrepreneur.