### Clue: Wrong or right, third person's invested in euros, oddly (9)
### Answer: ERRONEOUS 
 ### Explanation: Definition: Wrong
An envelope ('invested in') of R ('right', the second R in the answer) plus ONE ('third person' – even if one is referring to oneself, one is doing it in the third person) in EROUS, an anagram ('oddly') of 'euros'.