thorough
adjective
[ ˈθʌrə ]
• complete with regard to every detail; not superficial or partial.
• "planners need a thorough understanding of the subject"
Similar:
rigorous,
in-depth,
exhaustive,
thoroughgoing,
minute,
detailed,
close,
meticulous,
scrupulous,
assiduous,
conscientious,
painstaking,
methodical,
careful,
sedulous,
complete,
comprehensive,
elaborate,
full,
intensive,
extensive,
widespread,
sweeping,
searching,
all-embracing,
all-inclusive,
Origin:
Old English thuruh, alteration of thurh ‘through’. Original use was as an adverb and preposition, in senses of through . The adjective dates from the late 15th century, when it also had the sense ‘that goes or extends through something’, surviving in thoroughfare .