get to the bottom of
see definition of get to the bottom ofRelevance ranks synonyms and suggests the best matches based on how closely a synonym’s sense matches the sense you selected.
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Synonyms for get to the bottom of
verb probe, go intoAntonyms for get to the bottom of
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
plumb
verb. probe, go into
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.