euphoria (n.) Look up euphoria at Dictionary.com
1727, a physician's term for "condition of feeling healthy and comfortable (especially when sick)," medical Latin, from Greek euphoria "power of enduring easily," from euphoros, literally "bearing well," from eu "well" (see eu-) + pherein "to carry" (see infer). Non-technical use, now the main one, dates to 1882 and is perhaps a reintroduction.