To Beg

1. (intransitive) To request the help of someone, often in the form of money.
2. (transitive) To plead with someone for help, a favor, etc.; to entreat.

Synonym: supplicate

3. (transitive) In the phrase beg the question: to assume.
4. (transitive, proscribed) In the phrase beg the question: to raise (a question).

Antonym: set aside

5. (transitive, law, obsolete) To ask to be appointed guardian for, or to ask to have a guardian appointed for.

This is a catenative verb that takes the to infinitive. See Appendix:English catenative verbs