Here are some synonyms for "entreat":
* Beg
* Implore
* Supplicate
* Plead
* Petition
* Appeal
Example:
* "She entreated him to reconsider his decision."
* "The prisoners entreated their captors for mercy."
Note: "Entreat" is often used in formal or literary contexts. In everyday speech, you might be more likely to use synonyms like "beg" or "plead."