I was working on a math problem which stumped me very much, and the instant I tried "reverse engineering" it, the epiphany got me so happy. I was positively ELATED, but only for a short amount of time.
This might be what my wordbuilding project's characters feel on a daily basis, I'm calling it!
ElegantQuaternion
Now that I think about it, it may not be that much if a "reverse engineering" feat...
For context, Ludusia has a lot of math, engineering and logic lovers, who like solving problems.