1.the trait of sincere and steadfast fixity of purpose;
a man of energy and commitment
2.the act of binding yourself (intellectually or emotionally) to a course of action;
his long commitment to public service
3.an engagement by contract involving financial obligation;
his business commitments took him to London
4.a message that makes a pledge
5.the official act of consigning a person to confinement (as in a prison or mental hospital)