Translation guide
The English word "rigor" can refer to strictness, severity, or precision. In Japanese, the translation depends on the context: whether you mean rigorous standards, harsh conditions, or intellectual exactness.
Describing something that is demanding, strict, or severe in its requirements or nature.
The most common and versatile word for strictness or severity, used for rules, discipline, conditions, or training.
この学校の規則の厳しさは有名だ。
The rigor of this school's rules is famous.
訓練の厳しさに耐えられなかった。
I couldn't endure the rigor of the training.
Emphasizes strict adherence to rules or standards, often in formal or official contexts.
彼の教育方針の厳格さには驚かされる。
I'm surprised by the rigor of his educational policy.
Used for harshness or severity of conditions, especially physical or environmental.
砂漠の過酷さは想像を絶する。
The rigor of the desert is beyond imagination.
Referring to careful, exact, and thorough methods in academic or professional work.
The standard word for precision and exactness in thinking, research, or procedures.
科学的研究には厳密さが求められる。
Scientific research requires rigor.
彼の議論の厳密さに感心した。
I was impressed by the rigor of his argument.
Conveys meticulousness and elaborate detail, often used for craftsmanship or complex theories.
その理論の精緻さは群を抜いている。
The rigor of that theory is outstanding.
Emphasizes thoroughness and attention to detail, similar to meticulousness.
計画の緻密さが成功の鍵だった。
The rigor of the plan was the key to success.
The stiffening of the body after death.
The standard medical term for rigor mortis.
死後硬直が始まっている。
Rigor mortis has set in.
Use 厳しさ (kibishisa) for strictness or severity in rules, discipline, or conditions. Use 厳密さ (genmitsusa) for precision and exactness in intellectual or procedural contexts. Mixing them can sound unnatural.
この試験の厳しさは異常だ。
The rigor of this exam is extreme. (strictness)
この試験の厳密さは評価できる。
The rigor of this exam is commendable. (precision)
While 厳しさ can mean 'strict', it does not convey the intellectual exactness of 'rigor' in academic English. Use 厳密さ instead.