87 entries under difficult topic. ×

20
involved(adjective, hard, delicate, complex)
20
messy(adjective, hard, terrible, dirty)
20
stodgy(adjective, hard, complex)
20
stubborn(adjective, hard, complex)
19
arduous(adjective, hard, complex, awkward)
19
backbreaking(adjective, hard, complex, awkward)
19
fusty(adjective, hard, heavy, complex)
19
grinding(adjective, hard, complex, awkward)
19
serious(adjective, hard, complex, awkward)
19
severe(adjective, hard, complex, awkward)
19
slab(adjective, hard, complex, semiliquidity)
19
toilful(adjective, hard, complex, awkward)
18
burdensome(adjective, hard, complex, awkward)
18
disturbing(adjective, hard, complex)
18
impossible(adjective, hard, complex)
18
stale(adjective, hard, complex, tight)
18
toilsome(adjective, hard, complex, awkward)
14
awkward(adjective, tough, delicate, informal)
11
delicate(adjective, awkward, tricky, complicated)
10
embarrassing(adjective, awkward, uneasy, tricky)
10 years ago|14k views|share |citing 
APASmart Define. (2016). sticky thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sticky/thesaurus/synonyms
ChicagoSmart Define. 2016. "sticky thesaurus" https://smartdefine.org/sticky/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sticky thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sticky/thesaurus/synonyms>.
MLASmart Define. "sticky thesaurus" 2 March 2016. Web. 23 September 2026. <https://smartdefine.org/sticky/thesaurus/synonyms>