rigor
n. uncountablen. the quality of being extremely thorough, careful, and accurate. It is often used to describe high standards in science, law, or thinking.
n. the quality of being extremely thorough and exhaustive; strict adherence to precise standards or rules. Often refers to intellectual or scientific discipline.
The professor demands academic rigor in every essay.
The new drug passed every safety test with the level of scientific rigor required by international law.
While the initial hypothesis was bold, it lacked the analytical rigor necessary to survive a peer-review process conducted by the field's leading experts.
From Old French, from Latin rigor (“stiffness, rigidity, rigor, cold, harshness”), from rigere (“to be rigid”).
Often paired with 'academic', 'scientific', or 'intellectual'.
the rigors of the examthe rigor of the examIn the sense of 'thoroughness', the word is usually uncountable; the plural 'rigors' typically refers to harsh conditions or hardships.