Rigorous
/rˈɪɡərəs/
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Definition
(adj) Showing, causing, or favoring rigour/rigor; scrupulously accurate or strict; thorough.
Sentence Examples
The top engineer put the car through a series of rigorous tests.
The argument is rigorous and coherent but ultimately unconvincing.
CEFR Practice Quiz
The selection process was extremely ____, with candidates required to pass multiple tests and interviews.