Rigorous (?), 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.”
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He shall be thrown down the Tarpeian Rock
With rigorous hands. Shak.
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We do not connect the scattered phenomena into their rigorous unity. De Quincey.
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2. Severe; intense; inclement; as, “a rigorous winter”.
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3. Violent. [Obs.] “Rigorous uproar.” Spenser.
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4. (Mathematics, Logic) Adhering scrupulously and exactly to accepted principles; hence, logically valid; as, “a rigorous proof”.
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Syn. -- Rigid; inflexible; unyielding; stiff; severe; austere; stern; harsh; strict; exact.
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-- Rig"or*ous*ly, adv. -- Rig"or*ous*ness, n.
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