a. | 1. | Manifesting, exercising, or favoring rigor; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; |
2. | Severe; intense; inclement; | |
3. | Violent. | |
4. | (Mathematics, Logic) Adhering scrupulously and exactly to accepted principles; hence, logically valid; |
Adj. | 1. | rigorous - rigidly accurate; allowing no deviation from a standard; "rigorous application of the law"; "a strict vegetarian" Synonyms: strict |
2. | rigorous - demanding strict attention to rules and procedures; "rigorous discipline"; "tight security"; "stringent safety measures" | |
3. | rigorous - used of circumstances (especially weather) that cause suffering; "brutal weather"; "northern winters can be cruel"; "a cruel world"; "a harsh climate"; "a rigorous climate"; "unkind winters" |