If you beg someone to do something, you ask them very anxiously or eagerly to do it. I begged him to come back to England with me. [VERB noun to-infinitive] I begged to be allowed to leave. [VERB to-infinitive] We are not going to beg for help any more. [VERB + for] They dropped to their knees and begged forgiveness. [VERB noun] More @Wikipedia
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