Disgruntled Republican enters without clothes (6)
I believe the answer is:
narked
'disgruntled' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs occasionally define each other.
'republican enters without clothes' is the wordplay.
'republican' becomes 'r' (abbreviation).
'enters' indicates putting letters inside.
'without clothes' becomes 'naked' (I've seen this before).
'r' going within 'naked' is 'NARKED'.
Can you help me to learn more?
(Other definitions for narked that I've seen before include "Angry" , "Nettled" , "Annoyed - upset - irritated" , "Annoyed (informal)" , "Cross" .)