2
tricky(adjective, complicated, thorny, spiky)
1
abstruse
1
acanthous
1
aciform
1
aculeiform
1
acuminated
1
acuminous
1
apical
1
arduous
1
armed
1
bristling
1
brutal
1
complex
1
conical
1
craggy
1
critical
1
cuspate
1
demanding
1
difficile
1
edged
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APASmart Define. (2015). spiny thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/spiny/thesaurus/synonyms
ChicagoSmart Define. 2015. "spiny thesaurus" https://smartdefine.org/spiny/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, spiny thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/spiny/thesaurus/synonyms>.
MLASmart Define. "spiny thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/spiny/thesaurus/synonyms>