Fellow's tied in knots, getting high (5)
I believe the answer is:
fetid
'high' is the definition.
(thesaurus)
'fellow's tied in knots getting' is the wordplay.
'fellow' becomes 'f' (abbreviation - of a society etc.).
'in knots' is an anagram indicator (I've seen this in other clues).
'getting' says to put letters next to each other.
'tied' anagrammed gives 'etid'.
'f'+'etid'='FETID'
(Other definitions for fetid that I've seen before include "Smelly through decay" , "Noxious" , "Having a stale and unpleasant smell" , "Stinking, like animal breath" , "Reeking" .)