Definitions for overcommitˌoʊ vər kəˈmɪt
Random House Webster's College Dictionary
o•ver•com•mitˌoʊ vər kəˈmɪt(v.t.)-mit•ted, -mit•ting.
to commit more than is feasible, desirable, or necessary.
Category: Common Vocabulary
Origin of overcommit:
Allocation of more resources than are actually available.
To make excessive commitments, either beyond one's ability or beyond what is reasonable
Don't overcommit yourself this month.