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be onto someone
verb as in have someone's number
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On this page you'll find 6 synonyms, antonyms, and words related to be onto someone, such as: be wise to someone, have someone pegged, have someone sized up, know what makes someone tick, and read someone.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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