egalanimeco

Etymology
From.

Noun

 * 1) equanimity, even temper, composure
 * 2) * Heinrich August Luyken, Pro Iŝtar, Ĉapitro 12,
 * Tio ankoraŭ pligrandigis la surprizon de la bonkora komercisto. Tamen li ne perdis sian kutiman egalanimecon.
 * This made the good-hearted merchant even more surprised. However, he did not lose his customary composure.