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Synonyms for rock bottom
noun absolute bottomfundamental
noun. basic, essential part
nadir
noun. lowest point
root
noun. base, core
- basis
- bedrock
- beginnings
- bottom
- cause
- center
- crux
- derivation
- essence
- essentiality
- footing
- foundation
- fountain
- fountainhead
- fundamental
- germ
- ground
- groundwork
- heart
- inception
- infrastructure
- mainspring
- marrow
- motive
- nub
- nucleus
- occasion
- origin
- pith
- provenance
- provenience
- quick
- quintessence
- radicle
- radix
- reason
- rhizome
- rock bottom
- seat
- seed
- soul
- source
- starting point
- stem
- stuff
- substance
- substratum
- tuber
- underpinning
- well
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.