/kəˈmɪt/ verb [T] (present participle committing, past tense and past participle committed)
CRIME › to do something that is considered wrong, or that is illegal: He was sent to prison for a crime that he didn't commit. to commit suicide/adultery
DECISION › to make a firm decision that you will do something: He committed himself to helping others.
not commit yourself › to refuse to express an opinion about a particular subject
MONEY/TIME › If you commit money, time, energy, etc to something, you use it to try to achieve something: The government has committed thousands of pounds to the research.