1 done carefully and with a lot of attention to detail
SYNTHOROUGH:
a rigorous analysis / investigation * Few people have gone into the topic in such rigorous detail. * The second team adopted a much more rigorous approach to the problem.
2 demanding that particular rules, processes, etc. are strictly followed
SYNSTRICT:
The work failed to meet their rigorous standards.
rigorously adverb:
The country's press is rigorously controlled.
