Almost fail to notice guide is involved in malpractice (10)
I believe the answer is:
misconduct
'involved in malpractice' is the definition.
'misconduct' can be an answer for 'malpractice' (thesaurus). I am not sure about the 'involved in' bit.
'almost fail to notice guide' is the wordplay.
'almost' means to remove the last letter (almost the whole word is kept).
'fail to notice' becomes 'miss' (I've seen this in another clue).
'guide' becomes 'conduct' (synonyms).
'miss' with its last letter removed is 'mis'.
'mis'+'conduct'='MISCONDUCT'
'is' is the link.
Can you help me to learn more?
(Other definitions for misconduct that I've seen before include "Bad behaviour" , "wrongdoing" , "Improper behaviour" , "Immorality" .)