means The state of being healthy, comfortable, and content in body and mind — your overall condition of feeling well.

from A plain compound of "well" (the adverb, from Old English wel, meaning satisfactorily or properly) and "being" (existence, from the verb "to be"). It first appears in the 1600s, modeled closely on the Italian benessere and likely echoing Latin-rooted phrases like bene esse — literally "to be well." For centuries it simply meant prosperity or welfare; only much later did it drift toward the inner, mindful sense the wellness industry now sells back to you.