### Clue: Say nothing? Unlikely, if you have one (3)
### Answer: EGO 
 ### Explanation: Definition: Say nothing? Unlikely, if you have one
 EG(abbrev. for "exempli gratia";for example;say) + O(the letter signifying 0;nothing).
Defn: The conscious mind, possession of which would give you the facility of speech. A WIWD (wordplay intertwined with definition) clue.