rigorous
adjective
[ ˈrɪɡ(ə)rəs ]
• extremely thorough and careful.
• "the rigorous testing of consumer products"
Similar:
meticulous,
punctilious,
conscientious,
careful,
diligent,
attentive,
ultra-careful,
scrupulous,
painstaking,
exact,
precise,
accurate,
correct,
thorough,
studious,
exhaustive,
mathematical,
detailed,
perfectionist,
methodical,
particular,
religious,
strict,
fussy,
fastidious,
hair-splitting,
finicky,
finical,
demanding,
exacting,
pedantic,
nitpicking,
pernickety,
persnickety,
nice,
overnice,
laborious,
Origin:
late Middle English: from Old French rigorous or late Latin rigorosus, from rigor ‘stiffness’ (see rigor1).