from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To bind or obligate (oneself, for example) beyond the capacity for realization.
- transitive v. To allocate or apportion (money, goods, or resources) in amounts incapable of replacement.
- intransitive v. To be or become overcommitted.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To make excessive commitments, either beyond one's ability or beyond what is reasonable
- n. Allocation of more resources than are actually available.
over- + commit (Wiktionary)