Of Greek origin and possibly derived from the word for “pain” – but aside from childbirth, your little Achilles won’t possibly cause you any of that. Right? Right.
There are no really good nicknames for Achilles, although you will probably tell him to "chill" from time to time.
Famous people named Achilles:
Composer Achilles Alferaki; Roman martyr Saint Achilles.
In Greek mythology, Achilles was a hero whose only weak spot was his heel.