Synonyms of rigorous
- 1 Syllable
- right, nice, hard, stiff, strict, stern, harsh
- 2 Syllables
- correct, prudish, steely, brutal, rugged, steelier, exact, sterner, rigid, arduous, hang-tough, proper, stricter, spartan, strictest, stringent, bitter, hardshell, sternest
- 3 Syllables
- finicking, effortful, austere, watertight, punctilious, precise, inclement, careful, onerous, scrupulous, ascetic, dogmatic, relentless, exacting
- 4 Syllables
- oppressive, remorseless, definite, burdensome, accurate, peremptory, meticulous, ironhanded, inflexible, veridical, overtaxing, unrepenting
- 5 Syllables
- uncompromising, inalterable, ultraprecise, unadaptable, unpermissive, intemperate