English → Latin
“rigorous” in Latin
dūrushard; rough; harsh; hardy; vigoroussevērussevere, serious, strict, stern, stringent, austere, harsh, grave (in demeanor)rigidusstiff, rigid, hard, inflexible; stern, strict, severe, hard, inflexibleācersharp, sour, bitter, pungent; keen, sharp, acute, sagacious; energetic, active, vigorousacerbusharsh, bitter, unripe, sour, premature, not yet marriageable; sharp, severe, bitter (i.e., extremely painful); rough, viaustērusaustere, plain; harsh, bitter, sour; sharp, pungent, tartdūritiahardness, rigidity; harsh, having a harsh flavor; austerity, severityclēmēnsmerciful, lenient; mild, gentle, quiet, peaceful, easy, moderate; compliantiūdexjudge; decider, umpire; jurorinnocēnsharmless, inoffensive, innoxious; blameless, guiltless, innocent
The English word rigorous itself goes back to Latin rigeō, through rigōrōsus.
Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864
rigorous
With regard to enjoyment, durus. A rigorous mode of living, duritia (relative to abstinence or hard living; also of hardening the body): parsimonia victus atque cultus (with reference to abstinence from all luxury). A man of a very rigorous mode of living, vir vita durus: to lead or live a very rigorous life, parce ac duriter vitam agere.
Strict, severe, severus (severe in a moral point of view, as well against one’s self as against others; then also, of what shows such a character; opposed to indulgens: clemens; e.g., judge, judex); rigidus (rigid; e.g., censor, censor; disinterestedness, innocentia): (☞ rigorosus, formed from the French, is a barbarism.): acer (litterally, sharp; opposed to lenis, mollis; e.g., judgement, judicium): acerbus (harsh; opposed to lenis). (The words are found in this connection and order.) acer et severus; acerbus et severus: austerus (austere; e.g., like the Stoics; opposed to comis). Vid: also, SEVERE.
Quick answer
- What is the Latin word for rigorous?
- The usual Latin words for “rigorous” are dūrus, sevērus, rigidus; also ācer, acerbus, austērus. The right choice depends on the sense; see the distinctions below.
Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.