6
fissionable(adjective, atomic)
4
breakable(adjective, brittleness)
4
brittle(adjective, brittleness)
3
crisp
3
fragile(adjective, brittleness)
3
frail(adjective, brittleness)
3
frangible(adjective, brittleness)
3
shivery(adjective, brittleness)
3
splintery(adjective, brittleness)
2
brash(adjective, brittleness)
2
brittle as glass(expression, idiom, brittleness)
2
cleavage
2
divisible
2
flimsy
2
lacerable
2
scissile
2
separable
2
severable
2
splitting
1
alienable
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APASmart Define. (2015). fissile thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fissile/thesaurus/synonyms
ChicagoSmart Define. 2015. "fissile thesaurus" https://smartdefine.org/fissile/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, fissile thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fissile/thesaurus/synonyms>.
MLASmart Define. "fissile thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/fissile/thesaurus/synonyms>