1
introductory(simple, straightforward, basic, uncomplicated)
1
leading(adjective, top, essential, prime, vital)
1
lowermost(adjective, base, last, bottom)
1
major(adjective, important, significant, original, essential)
1
meat-and-potatoes(adjective, base, important, significant, last)
1
meat and potatoes(expression, adjective, idiom, simple, plain)
1
muffled
1
mystic
1
mystical
1
native
1
nethermost(adjective, base, last, bottom)
1
nitty-gritty(adjective, original, basic, absolute, fundamental)
1
nub(adjective, original, basic, absolute, fundamental)
1
obfuscated
1
obscured
1
occult
1
of the essence(expression, idiom)
1
paramount(adjective, important, significant, original, essential)
1
plain(simple, straightforward, basic, uncomplicated)
1
possible
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APASmart Define. (2015). underlying thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underlying/thesaurus/synonyms
ChicagoSmart Define. 2015. "underlying thesaurus" https://smartdefine.org/underlying/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, underlying thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underlying/thesaurus/synonyms>.
MLASmart Define. "underlying thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/underlying/thesaurus/synonyms>