2
unbelievable(adjective, unreasonable, doubtful, dubious, suspicious)
2
unconvincing(unreasonable, dubious, unlikely, flimsy, unbelievable)
2
unpredictable
2
unstable(adjective, delicate, uncertain, awkward, nervous)
2
unsteady(adjective, delicate, uncertain, unstable, doubtful)
2
vacillating(adjective, uncertain, nervous, doubtful, insecure)
2
wavering(adjective, uncertain, nervous, doubtful, insecure)
2
worrying
1
Daedalean(adjective, hard, fancy, difficult, complex)
1
adverse
1
ambivalent
1
amiss
1
amphibological(vague, unclear, ambiguous, misleading, indistinct)
1
backbreaker(tough, severe, painful, trying)
1
betwixt and between(expression, adjective, idiom, uncertain, nervous)
1
beyond belief
1
bothering
1
bothersome(tough, severe, painful, tricky, trying)
1
bunglesome(adjective, aroused negative)
1
can of worms(expression, adjective, idiom, hard, fancy)
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APASmart Define. (2016). problematic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/problematic/thesaurus/synonyms
ChicagoSmart Define. 2016. "problematic thesaurus" https://smartdefine.org/problematic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, problematic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/problematic/thesaurus/synonyms>.
MLASmart Define. "problematic thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/problematic/thesaurus/synonyms>