Thorough (2-5)
'thorough' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for in-depth that I've seen before include "Thorough and intensive" , "Profoundly (studied)" , "Thoroughly and comprehensively" , "Detailed (investigation)" , "Full" .)
'thorough' is the definition.
(I know that thorough can be written as exhaustive)
This is all the clue.
(Other definitions for exhaustive that I've seen before include "Thorough" , "all-embracing" , "Comprehensive" , "trying out all possibilities" .)
'thorough' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for out-and-out that I've seen before include "Thorough, surpassing" , "Definitely" , "Absolute; completely" , "Utter and thorough - never in" , "Utter, absolute" .)