Hwyl
Etymology
From Welsh, where the word literally means “sail.” The nautical image — of being driven along by the wind — extended into the sense of emotional momentum and fervor, famously the impassioned cadence of Welsh preaching and singing. It is also used casually as a farewell, “hwyl!,” much like “cheers.”
noun · /HOO-il/
A stirring surge of emotional fervor, enthusiasm, and passionate energy.
What it names
The rousing, almost transporting intensity that lifts a speaker, singer, or crowd — spirited feeling that carries everyone along.
Example
The choir sang the last verse with such hwyl that half the hall was in tears.
Related idea
Spanish duende is a dark, soulful artistic power; hwyl is a brighter, communal swell of fervor and enthusiasm, closer to being caught up in the wind of a shared feeling.