1. to commit oneself to more activities, responsibilities, or obligations than one can reasonably handle
2. to allocate or promise more resources than are available
Usage: business; finance

Examples

• Don’t overcommit yourself to too many extracurricular activities.
• She tends to overcommit her time and then feels overwhelmed.
• The company overcommitted its budget for the new project.
• I overcommitted to volunteer work and had to drop some responsibilities.
• The airline overcommitted seats on the popular flight.
• He learned not to overcommit after missing several important deadlines.