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Phrase(s): over and above something
Fig. more than something; in addition to something. • I’ll need another twenty dollars over and above the amount you have already given me. • You’ve been eating too much food over and above what is required for good nutrition. That’s why you’re gaining weight.
McGrawhill's American Idioms And Phrasal Verbs
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In addition to, besides, as in Over and above travel expenses he was given a daily allowance. [Early 1500s]
American Heritage Idioms