rigorous

US /ˈrɪɡərəs/

UK /ˈrɪgərəs/

B1TOEIC
adj.AdjectiveVery strict and often difficult; thorough
He did rigorous testing before selling the car
adj.AdjectiveThorough; meticulous; exhaustive.
The scientist conducted a rigorous analysis of the data.
adj.AdjectiveDemanding; challenging; exacting.
The course was known for its rigorous academic standards.

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