Search Result for "rigorous": 
Wordnet 3.0


1. rigidly accurate; allowing no deviation from a standard;
- Example: "rigorous application of the law"
- Example: "a strict vegetarian"
[syn: rigorous, strict]

2. demanding strict attention to rules and procedures;
- Example: "rigorous discipline"
- Example: "tight security"
- Example: "stringent safety measures"
[syn: rigorous, stringent, tight]

The Collaborative International Dictionary of English v.0.48:

Rigorous \Rig"or*ous\, a. [F. rigoureux, LL. rigorosus. See Rigor.] 1. Manifesting, exercising, or favoring rigor; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration. [1913 Webster] He shall be thrown down the Tarpeian Rock With rigorous hands. --Shak. [1913 Webster] We do not connect the scattered phenomena into their rigorous unity. --De Quincey. [1913 Webster] 2. Severe; intense; inclement; as, a rigorous winter. [1913 Webster] 3. Violent. [Obs.] "Rigorous uproar." --Spenser. [1913 Webster] 4. (Mathematics, Logic) Adhering scrupulously and exactly to accepted principles; hence, logically valid; as, a rigorous proof. [PJC] Syn: Rigid; inflexible; unyielding; stiff; severe; austere; stern; harsh; strict; exact. [1913 Webster] -- Rig"or*ous*ly, adv. -- Rig"or*ous*ness, n. [1913 Webster]
WordNet (r) 3.0 (2006):

rigorous adj 1: rigidly accurate; allowing no deviation from a standard; "rigorous application of the law"; "a strict vegetarian" [syn: rigorous, strict] 2: demanding strict attention to rules and procedures; "rigorous discipline"; "tight security"; "stringent safety measures" [syn: rigorous, stringent, tight]
Moby Thesaurus II by Grady Ward, 1.0:

261 Moby Thesaurus words for "rigorous": Herculean, Siberian, abstruse, accurate, acid, acidulous, acrid, acrimonious, acute, adamant, adamantine, adverse, algid, antagonistic, arctic, arduous, ascetic, astringent, attentive, below zero, biting, bitter, bitterly cold, bleak, boreal, brisk, brumal, brutal, burdensome, cast-iron, caustic, close, cold, cold as charity, cold as death, cold as ice, cold as marble, complex, conflicting, conscientious, constant, contrary, correct, counter, counteractive, crisp, critical, cutting, delicate, demanding, detailed, detrimental, difficile, difficult, direct, double-edged, dour, draconian, drastic, edged, escharotic, even, exact, exacting, excessive, exigent, exorbitant, express, exquisite, extravagant, extreme, faithful, fierce, fine, finical, finicking, finicky, firm, flinty, formidable, freezing, freezing cold, frigid, fundamentalist, furious, fussy, gelid, glacial, great, grim, hairy, hard, hard-core, hard-earned, hard-fought, harmful, harsh, hibernal, hidebound, hiemal, hostile, hyperborean, ice-cold, ice-encrusted, icelike, icy, immoderate, immovable, immutable, implacable, impliable, in opposition, incisive, inclement, inelastic, inerrable, inerrant, inexorable, infallible, inflexible, inimical, intemperate, intense, intransigent, intricate, iron, ironbound, ironclad, ironhanded, irreconcilable, jawbreaking, keen, knotted, knotty, laborious, mathematical, mean, meticulous, micrometrically precise, microscopic, minute, miserable, mordacious, mordant, muscle-bound, narrow, nice, nipping, nippy, no picnic, not easy, numbing, obdurate, obstinate, onerous, operose, opposed, opposing, opposite, oppressive, orthodox, outrageous, particular, penetrating, piercing, pinching, pinpoint, poignant, precise, precisianistic, precisionistic, procrustean, proper, punctilious, punctual, purist, puristic, puritan, puritanic, raw, refined, relentless, religious, religiously exact, right, rigid, rigorist, rigoristic, rock-ribbed, rockbound, rough, rugged, scathing, scientific, scientifically exact, scrupulous, scrutinizing, set with thorns, severe, sharp, sinister, sleety, slushy, snappy, spiny, splitting, square, stabbing, steely, steep, stern, stiff, stinging, stone-cold, straightlaced, straitlaced, strenuous, stressful, strict, strident, stringent, stubborn, subtle, subzero, supercooled, tart, thorny, ticklish, toilsome, tough, trenchant, tricky, troublesome, troublous, trying, unaffected, unalterable, unbending, unchangeable, uncompromising, unconscionable, undeviating, unerring, unfavorable, ungiving, unmoved, unrelenting, untoward, unyielding, uphill, vehement, venomous, violent, virulent, vitriolic, wicked, winterbound, winterlike, wintery, wintry, wretched