### Clue: This boosts, for example, ordinary journey (3,4)
### Answer: EGO TRIP 
 ### Explanation: Definition: This boosts
  EG(exempli gratia,*for example*) O(*$$o$$rdinary*) TRIP(*journey*)
Defn:  Something that *boosts* one's ego, maybe like completing a Nimrod, Anax, Loroso, Bannsider, et al, or any decent crossword for that matter.