performed comprehensively and completely; not superficial or partial
"an exhaustive study"
"made a thorough search"
"thoroughgoing research"
without qualification; used informally as (often pejorative) intensifiers
"an arrant fool"
"a complete coward"
"a consummate fool"
"a double-dyed villain"
"gross negligence"
"a perfect idiot"
"pure folly"
"what a sodding mess"
"stark staring mad"
"a thorough nuisance"
"a thoroughgoing villain"
"utter nonsense"
"the unadulterated truth"
With great attention to detail; complete, thorough.