The meaning of RIGOROUS is manifesting, exercising, or favoring rigor : very strict. How to use rigorous in a sentence. Synonym Discussion of Rigorous.

RIGOROUS meaning: 1. careful to look at or consider every part of something to make certain it is correct or safe…. Learn more.

rigorous meaning, definition, what is rigorous: careful, thorough, and exact: Learn more.

Discover everything about the word "RIGOROUS" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

There are seven meanings listed in OED's entry for the adjective rigorous, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Dec 14, 2025 · Adjective rigorous (comparative more rigorous, superlative most rigorous) Showing, causing, or favoring rigour / rigor; scrupulously accurate or strict; thorough.

1. characterized by or proceeding from rigour; harsh, strict, or severe: rigorous discipline. 2. severely accurate; scrupulous: rigorous book-keeping.

1. Characterized by or adhering to strict standards or methods; exacting and thorough: a rigorous study of the medication; a rigorous researcher. 2. a. Harsh, severe, or demanding: a rigorous taskmaster; a …

rig•or•ous (rig′ ər əs), adj. characterized by rigor; rigidly severe or harsh, as people, rules, or discipline: rigorous laws. severely exact or accurate; precise: rigorous research. (of weather or climate) …

Some common synonyms of rigorous are rigid, strict, and stringent. While all these words mean "extremely severe or stern," rigorous implies the imposition of hardship and difficulty.