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rigorous
/ˈrɪgərəs/
US
UK
adjective
[more ~; most ~]
very strict and demanding
rigorous
enforcement
of
the
rules
rigorous
training
a
rigorous
course
of
study
done carefully and with a lot of attention to detail
We
subjected
the
data
to
a
rigorous
analysis
.
a
rigorous
investigation
difficult to endure because of extreme conditions
a
harsh
, rigorous
climate
US