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quintessence

[kwin-tes-uhns] / kwɪnˈtɛs əns /
NOUN
essence, core
Synonyms
STRONGEST
apotheosis
STRONG
bottom distillation epitome essentiality extract gist heart kernel lifeblood marrow pith quiddity soul spirit stuff substance ultimate
WEAK
last word virtuality
Antonyms
STRONG
exteriority outside
WEAK
extra

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.