riguroso
rigorous
adjective rree-goo-ROH-soh Rare
Origin: From Latin rigorosus (stiff, severe).
Also means
harsh; strict
Usage Note
Riguroso means thorough and exacting (un análisis riguroso, 'a rigorous analysis') or harsh in a physical sense (un invierno riguroso, 'a harsh winter'). The adverb is rigurosamente. Do not confuse with rígido (rigid, stiff as a physical property) — riguroso implies methodical strictness or severity rather than physical inflexibility. The noun is rigor.
Examples
"El proceso de selección fue muy riguroso."
Natural Translation
The selection process was very rigorous.

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