121 entries under rigid topic. ×

2
no-nonsense(adjective, severe, sharp, firm, harsh)
2
resolved(adjective, resolute)
2
solidified(adjective, hard, solid, inflexible)
1
Draconian(adjective, severe, firm, harsh)
1
by the book(expression, adjective, idiom, strong, hard)
1
careful(adjective, complete, harsh, exact, full)
1
close(adjective, hard, solid, inflexible)
1
compact(adjective, set, hard, firm, solid)
1
concentrated(adjective, set, strong, hard, firm)
1
definite
1
disciplinary(adjective, strong, hard, severe, firm)
1
imperious(adjective, hard, smart, difficult, harsh)
1
incompliant(adjective, firm, difficult, informal, awkward)
1
indurated(adjective, hard, firm, careless, indifferent)
1
iron-fisted(adjective, severe, firm, harsh)
1
nit-picking(adjective, rough, harsh, strict)
1
persnickety(adjective, harsh, strict, thorough)
1
picky(adjective, severe, firm, harsh, grim)
1
punctilious(adjective, severe, firm, harsh, careful)
1
scrupulous(adjective, complete, severe, firm, harsh)
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APASmart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>