114 entries under hard topic. ×

22
rugged(adjective, difficulty, difficult, complex)
22
toilsome(adjective, difficult, complex, awkward)
22
trying(adjective, difficulty, difficult, complex)
21
burdensome(adjective, difficult, complex, awkward)
21
composite(adjective, difficult, complex)
21
oppressive(adjective, difficult, complex, tedious)
21
rough(adjective, difficult, complex, awkward)
21
severe(adjective, difficult, complex, awkward)
21
sinuous(adjective, difficult, complex)
21
sticky(adjective, difficult, delicate, complex)
20
grinding(adjective, difficult, complex, awkward)
20
involute(adjective, simple, difficult, complex)
20
nasty(adjective, evil, difficult, complex)
20
sensitive(adjective, difficult, complex)
20
stressful(adjective, difficult, complex)
20
tight(adjective, difficult, complex)
19
ambitious(adjective, difficult, complex)
19
anfractuous(adjective, difficult, complex)
19
backbreaking(adjective, difficult, complex, awkward)
19
esoteric(adjective, evil, difficult, complex)
10 years ago|22k views|share |citing 
APASmart Define. (2016). complicated thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/complicated/thesaurus/synonyms
ChicagoSmart Define. 2016. "complicated thesaurus" https://smartdefine.org/complicated/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, complicated thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/complicated/thesaurus/synonyms>.
MLASmart Define. "complicated thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/complicated/thesaurus/synonyms>