Why this word is great
TRISTESSE — [Noun] A state or feeling of pensive or poetic sadness. From Middle English trestesse, tristes, tristesce, tristesse, tristice, from Middle French tristesse, ultimately from Latin tristis ("sad, sorrowful"). Unlike "melancholy," with its humoral and philosophical weight, or "sorrow," which is a sharp and specific wound, tristesse is a quieter, more atmospheric and aesthetic ache. It is the gray light on a rain-streaked window, the warmth left in a teacup after a farewell, and the solitary bloom on a blighted branch—a formal, beautiful acknowledgment of sadness as the natural climate of a contemplative heart.