rigorousness

Noun

Synonyms: asperity grimness hardship rigor rigour severity severeness rigourousness harshness inclemency hardness stiffness

WordNet 3.0

Noun (2)

something hard to endure“the asperity of northern winters”Synonyms: asperity grimness hardship rigor rigour severity severeness rigourousness
excessive sternness“severity of character”“the harshness of his punishment was inhuman”“the rigors of boot camp”Synonyms: severity severeness harshness rigor rigour rigourousness inclemency hardness stiffness

Webster's Dictionary (GCIDE)

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]