Such guerrillas are less than urbane (5)
I believe the answer is:
urban
'such guerrillas are' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can sometimes mean the same thing.
'less than urbane' is the wordplay.
'less than' means to remove the last letter (not the full word).
'urbane' with its last letter taken away is 'URBAN'.
Can you help me to learn more?
(Other definitions for urban that I've seen before include "So typical of City" , "Relating to built-up areas" , "Relating to cities" , "Relating to a densely populated area" , "away from the country?" .)