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Phrase(s): half under
1. Lit. semiconscious. • I was half under and could hear what the doctor was saying. • I was afraid they would start cutting while I was only half under. 2. Fig. Inf. to be intoxicated; to be tipsy. • He was half under and could barely stand up. • Only four beers and she was half under.
McGrawhill's American Idioms And Phrasal Verbs