65 entries under tough topic. ×

52
fussy(adjective, accept, sharp, fine)
35
finicky(adjective, accept, character, sharp)
24
exacting(adjective, accept, fine, proper)
21
picky(adjective, accept, sharp, fine)
16
demanding(adjective, difficult, awkward, careful)
14
difficult(adjective, careful, scrupulous, particular)
10
severe(adjective, problematic, trying, disapprobation)
7
hard to please(expression, adjective, idiom, careful)
4
rigid(adjective, grim, particular, problematic)
2
difficile(problematic, trying)
1
boorish(grim, problematic, trying, troublesome)
1
bothersome(problematic, trying)
1
burdensome(problematic, trying)
1
challenging(problematic, trying)
1
stiff(particular, problematic, trying, fussy)
1
unyielding(adjective, problematic, trying)
0
ambitious(problematic, trying)
0
arduous(problematic, trying)
0
argumentative(grim, problematic, trying, troublesome)
0
backbreaker(problematic, trying)
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APASmart Define. (2016). fastidious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fastidious/thesaurus/synonyms
ChicagoSmart Define. 2016. "fastidious thesaurus" https://smartdefine.org/fastidious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, fastidious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fastidious/thesaurus/synonyms>.
MLASmart Define. "fastidious thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/fastidious/thesaurus/synonyms>