rigorous
Pronunciation
Adjective
C1 Advanced
Quick answer
Extremely thorough, careful, and demanding, leaving little room for error.
Synonyms and antonyms
Test yourself
Which word fits the gap? "The new drug went through a _____ testing process before approval."
Answer: rigorous
In your own words, what does "rigorous" mean?
Extremely thorough, careful, and demanding, leaving little room for error.
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