Why this word is great
TOSKA — [Noun] A sensation of deep spiritual anguish or yearning melancholy, often without a specific cause. From Russian тоска (toská), meaning 'melancholy, anguish'. Unlike 'sadness' (which is a response to loss) or 'nostalgia' (which longs for the past), toska is the ache of an unfilled void, a homesickness for a place you’ve never been. It is the weight of an overcast sky pressing on your chest, the hollow echo of footsteps in an empty train station, or the way a single note from a distant piano can unravel you—not because it is sad, but because it reminds you that longing is the baseline condition of being alive.