Toady caught with revolutionary noble (5)
I believe the answer is:
creep
'toady' is the definition.
(thesaurus)
'caught with revolutionary noble' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'with' is a charade indicator (letters next to each other).
'revolutionary' says the letters should be written in reverse (letters revolve around).
'noble' becomes 'peer' (peers are members of the nobility).
'peer' backwards is 'reep'.
'c'+'reep'='CREEP'
(Other definitions for creep that I've seen before include "Move slowly with body close to ground" , "Inch" , "Slow motion" , "Move furtively" , "Walk slowly, silently" .)