### Clue: Tradesman not entirely concealing Dutch accent (5)
### Answer: TILDE 
 ### Explanation: Definition: accent
 "tiler"(a tradesman;a skilled worker specialising in laying tiles) **minus its last letter**(not entirely) **containing**(concealing) D(abbrev. for "Dutch").
Defn: A diacritical mark used in the Spanish and Portuguese languages.