keynote/keystone
Synonyms for keynote/keystone
- basic idea
- basis
- center
- core
- cornerstone
- criterion
- crux
- gist
- heart
- idea
- kernel
- linchpin
- mainspring
- marrow
- measure
- motive
- nub
- pith
- principle
- root
- source
- spring
- standard
- substance
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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.