RIGOROUSLY
rigorously, strictly
(adverb) in a rigorous manner; “he had been trained rigorously by the monks”
Source: WordNet® 3.1
Etymology
Adverb
rigorously (comparative more rigorously, superlative most rigorously)
In a rigorous manner.
Source: Wiktionary
RIGOROUS
Rig"or*ous, a. Etym: [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.
He shall be thrown down the Tarpeian Rock With rigorous hands. Shak.
We do not connect the scattered phenomena into their rigorous unity.
De Quincey.
2. Severe; intense; inclement; as, a rigorous winter.
3. Violent. [Obs.] "Rigorous uproar." Spenser.
Syn.
– Rigid; inflexible; unyielding; stiff; severe; austere; stern;
harsh; strict; exact.
– Rig"or*ous*ly, adv.
– Rig"or*ous*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition