Synonyms of crux

1 Syllable
sphinx, crunch, nub, heart, pith, thrust, meat, core, root, gist
2 Syllables
fulcrums, thrillers, thriller, hyphen, stumper, crunches, rebus, nubbin, mainspring, stumpers, kernels, teasers, sphinxes, teaser, corey, body, nucleus, purport, crises, linchpin, radix, linchpins, crunched, puzzler, nubbins, crisis, fulcrum, puzzlers, nuclei, sphinges, kernel, matter, chillers, hyphens
3 Syllables
arduousness, affliction, radicle, rhizome, mystery, whodunit, braintwister, brainteaser, mindboggler, radixes, gravamen, mind-twister, mysteries, radices, essence, tangency, juncture, afflictions, substance, nucleuses
4 Syllables
perplexity, fuselage, nitty-gritty, abstruseness, conjuncture, difficulties, difficulty, perplexities
5 Syllables
abstrusenesses, inscrutableness
6 Syllables
inscrutability