IPA: /ˈheɪlnəs/
KK: /ˈheɪlnəs/
The condition of being healthy and strong.
Despite his age, he maintained a remarkable haleness that impressed everyone.
Haleness is derived from "hale" (from Old English *hal*, meaning whole or healthy) and the suffix "-ness" (meaning the state or quality of). The word "haleness" refers to the state of being whole or healthy.
Think of 'hale' meaning healthy or whole, and remember that 'haleness' describes the quality of being healthy.