### Clue: Not all there spreading nepotism among subordinate officers (3,6,6)
### Answer: NON COMPOS MENTIS 
 ### Explanation: Definition: Not all there
 **Anagram of**(spreading) NEPOTISM **contained in**(among) NON-COMS(short for non-commissioned officers, subordinate to commissioned officers).
Defn: …/not mentally sound.